MDEV-28388: As Travis is not used anymore remove configurations files

As Travis is not used anymore for CI is not wise to keep untested CI files laying around
that someone can base their effort to update un-used files.

.travis.compiler.sh

-#!/bin/sh
-set -v -x
-
-# Exclude modules from build not directly affecting the current
-# test suites found in $MYSQL_TEST_SUITES, to conserve job time
-# as well as disk usage
-
-function exclude_modules() {
-# excludes for all
-CMAKE_OPT="${CMAKE_OPT} -DPLUGIN_TOKUDB=NO -DPLUGIN_MROONGA=NO -DPLUGIN_SPIDER=NO -DPLUGIN_OQGRAPH=NO -DPLUGIN_PERFSCHEMA=NO -DPLUGIN_SPHINX=NO"
-# exclude storage engines not being tested in current job
-if [[ ! "${MYSQL_TEST_SUITES}" =~ "archive" ]]; then
-  CMAKE_OPT="${CMAKE_OPT} -DPLUGIN_ARCHIVE=NO"
-fi
-if [[ ! "${MYSQL_TEST_SUITES}" =~ "rocksdb" ]]; then
-  CMAKE_OPT="${CMAKE_OPT} -DPLUGIN_ROCKSDB=NO"
-fi
-}
-
-if [[ "${TRAVIS_OS_NAME}" == 'linux' ]]; then
-  TEST_CASE_TIMEOUT=2
-  exclude_modules;
-  if which ccache ; then
-    CMAKE_OPT="${CMAKE_OPT} -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache"
-    ccache --max-size=2200M
-  fi
-  if [[ "${CXX}" == 'clang++' ]]; then
-    export CXX CC=${CXX/++/}
-  elif [[ "${CXX}" == 'g++' ]]; then
-    export CXX=g++-${CC_VERSION}
-    export CC=gcc-${CC_VERSION}
-  fi
-  if [[ ${CC_VERSION} == 6 ]]; then
-    wget http://mirrors.kernel.org/ubuntu/pool/universe/p/percona-xtradb-cluster-galera-2.x/percona-xtradb-cluster-galera-2.x_165-0ubuntu1_amd64.deb ;
-    ar vx percona-xtradb-cluster-galera-2.x_165-0ubuntu1_amd64.deb
-    tar -xJvf data.tar.xz
-    export WSREP_PROVIDER=$PWD/usr/lib/libgalera_smm.so
-    MYSQL_TEST_SUITES="${MYSQL_TEST_SUITES},wsrep"
-  fi
-fi
-
-if [[ "${TRAVIS_OS_NAME}" == 'osx' ]]; then
-  TEST_CASE_TIMEOUT=20
-  exclude_modules;
-  CMAKE_OPT="${CMAKE_OPT} -DOPENSSL_ROOT_DIR=/usr/local/opt/openssl"
-  if which ccache ; then
-    CMAKE_OPT="${CMAKE_OPT} -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache"
-  fi
-fi
-
-set +v +x

.travis.yml

-# vim ft=yaml
-# travis-ci.org definition
-
-sudo: false
-dist: trusty
-
-git:
-  depth: 2
-
-language: cpp
-os:
-  - linux
-  - osx
-osx_image: xcode12u
-compiler:
-  - gcc
-  - clang
-
-cache:
-  timeout: 500
-  apt: true
-  ccache: true
-
-env:
-  matrix:
-    - CC_VERSION=5 TYPE=RelWithDebInfo MYSQL_TEST_SUITES=main
-    - CC_VERSION=5 TYPE=RelWithDebInfo MYSQL_TEST_SUITES=archive,optimizer_unfixed_bugs,parts,sys_vars,unit,vcol,innodb,innodb_gis,innodb_zip,innodb_fts
-    - CC_VERSION=5 TYPE=RelWithDebInfo MYSQL_TEST_SUITES=rpl
-    - CC_VERSION=6 TYPE=RelWithDebInfo MYSQL_TEST_SUITES=binlog,binlog_encryption,encryption
-    - CC_VERSION=6 TYPE=RelWithDebInfo MYSQL_TEST_SUITES=rocksdb,versioning
-    - CC_VERSION=6 TYPE=RelWithDebInfo MYSQL_TEST_SUITES=csv,federated,funcs_1,funcs_2,gcol,handler,heap,json,maria,perfschema,plugins,multi_source,roles
-
-matrix:
-  exclude:
-    - os: osx
-      compiler: gcc
-  include:
-    - os: linux
-      compiler: gcc
-      env:
-        - DebPackages
-      addons:
-        apt:
-          packages: # make sure these match debian/control contents
-            - bison
-            - chrpath
-            - cmake
-            - debhelper
-            - dh-apparmor
-            - dh-exec
-            - dpatch
-            - gdb
-            - libaio-dev
-            - libboost-dev
-            - libcurl3-dev
-            - libdbd-mysql
-            - libjudy-dev
-            - libncurses5-dev
-            - libpam0g-dev
-            - libpcre3-dev
-            - libreadline-gplv2-dev
-            - libstemmer-dev
-            - libssl-dev
-            - libnuma-dev
-            - libxml2-dev
-            - lsb-release
-            - perl
-            - po-debconf
-            - psmisc
-            - zlib1g-dev
-            - libcrack2-dev
-            - cracklib-runtime
-            - libjemalloc-dev
-            - libsnappy-dev
-            - liblzma-dev
-            - libzmq-dev
-            - libdistro-info-perl
-            - uuid-dev
-            - devscripts
-            - fakeroot
-      script:
-        - ${CC} --version ; ${CXX} --version
-      # https://github.com/travis-ci/travis-ci/issues/7062 - /run/shm isn't writable or executable
-      # in trusty containers
-        - export MTR_MEM=/tmp
-        - env DEB_BUILD_OPTIONS="parallel=4" debian/autobake-deb.sh;
-        - ccache --show-stats
-  # Until OSX becomes a bit more stable: MDEV-12435 MDEV-16213
-  allow_failures:
-    - os: osx
-      compiler: clang
-      env: CC_VERSION=5 TYPE=RelWithDebInfo MYSQL_TEST_SUITES=rpl
-    - os: osx
-      compiler: clang
-      env: CC_VERSION=5 TYPE=RelWithDebInfo MYSQL_TEST_SUITES=main
-    - os: osx
-      compiler: clang
-      env: CC_VERSION=5 TYPE=RelWithDebInfo MYSQL_TEST_SUITES=archive,optimizer_unfixed_bugs,parts,sys_vars,unit,vcol,innodb,innodb_gis,innodb_zip,innodb_fts
-    - os: osx
-      compiler: clang
-      env: CC_VERSION=6 TYPE=RelWithDebInfo MYSQL_TEST_SUITES=binlog,binlog_encryption,encryption
-    - os: osx
-      compiler: clang
-      env: CC_VERSION=6 TYPE=RelWithDebInfo MYSQL_TEST_SUITES=rocksdb,versioning
-    - os: osx
-      compiler: clang
-      env: CC_VERSION=6 TYPE=RelWithDebInfo MYSQL_TEST_SUITES=csv,federated,funcs_1,funcs_2,gcol,handler,heap,json,maria,perfschema,plugins,multi_source,roles
-
-addons:
-  apt:
-    sources:
-      - ubuntu-toolchain-r-test
-      - llvm-toolchain-trusty-5.0
-      - llvm-toolchain-trusty-6.0
-    packages: # make sure these include all compilers and all build dependencies (see list above)
-      - gcc-5
-      - g++-5
-      - gcc-6
-      - g++-6
-      - clang-5.0
-      - llvm-5.0-dev
-      - clang-6.0
-      - llvm-6.0-dev
-      - bison
-      - chrpath
-      - cmake
-      - gdb
-      - libaio-dev
-      - libboost-dev
-      - libcurl3-dev
-      - libdbd-mysql
-      - libjudy-dev
-      - libncurses5-dev
-      - libpam0g-dev
-      - libpcre3-dev
-      - libreadline-gplv2-dev
-      - libstemmer-dev
-      - libssl-dev
-      - libnuma-dev
-      - libxml2-dev
-      - lsb-release
-      - perl
-      - psmisc
-      - zlib1g-dev
-      - libcrack2-dev
-      - cracklib-runtime
-      - libjemalloc-dev
-      - libsnappy-dev
-      - liblzma-dev
-      - libzmq-dev
-      - uuid-dev
-
-# libsystemd-daemon-dev # https://github.com/travis-ci/apt-package-whitelist/issues/3882
-
-before_install:
-  - if [[ "${TRAVIS_OS_NAME}" == 'osx' ]]; then
-      brew update;
-      brew install gnutls lz4 lzo xz snappy ccache jemalloc curl ossp-uuid pcre zstd;
-      brew link ccache;
-      export PATH="/usr/local/opt/ccache/libexec:$PATH";
-    fi
-
-before_script:
-  - df -h
-  - ccache --version
-  - ccache --show-stats
-
-script:
-# following modules are disabled after sourcing .travis.compiler.sh:
-# clang disabled: mroonga just generates too many warnings with clang and travis stops the job
-# cland disabled: tokudb has fatal warnings
-# gcc/rpl: tokudb and mroonga
-  - source .travis.compiler.sh
-  - cmake .
-           -DCMAKE_BUILD_TYPE=${TYPE}
-           ${CMAKE_OPT}
-           -DWITH_SSL=system -DWITH_ZLIB=system
-  - make -j 4
-  - cd mysql-test
-  - travis_wait 30 ./mtr --force --max-test-fail=20 --parallel=4 --testcase-timeout=${TEST_CASE_TIMEOUT}
-         --suite=${MYSQL_TEST_SUITES}
-         --skip-test-list=unstable-tests
-         --skip-test=binlog.binlog_unsafe
-  - ccache --show-stats
-  - df -h
-
-notifications:
-  irc:
-    channels:
-      - "chat.freenode.net#maria"
-    on_success: never # [always|never|change]
-    on_failure: never
-    template:
-      - "%{repository}/%{branch} (%{commit} - %{author}): %{build_url}: %{message}"