BUG#16247322-MTR NOT RUNNING SYS_VARS TEST SUITE FOR 5.1

Reverting back the previous changes as they are causing
issues in PB2.

mysql-test/Makefile.am

@@ -103,8 +103,7 @@ TEST_DIRS = t r include std_data std_data/parts collections \
 	suite/engines suite/engines/funcs suite/engines/iuds suite/engines/rr_trx \
 	suite/engines/funcs/r suite/engines/funcs/t suite/engines/iuds/r \
 	suite/engines/iuds/t suite/engines/rr_trx/include suite/engines/rr_trx/r \
-	suite/engines/rr_trx/t \
-	suite/sys_vars
+	suite/engines/rr_trx/t
 
 # Used by dist-hook and install-data-local to copy all
 # test files into either dist or install directory

mysql-test/mysql-test-run.pl

@@ -157,7 +157,7 @@ my $path_config_file;           # The generated config file, var/my.cnf
 # executables will be used by the test suite.
 our $opt_vs_config = $ENV{'MTR_VS_CONFIG'};
 
-my $DEFAULT_SUITES= "main,sys_vars,binlog,federated,rpl,rpl_ndb,ndb,innodb,innodb_plugin";
+my $DEFAULT_SUITES= "main,binlog,federated,rpl,rpl_ndb,ndb,innodb,innodb_plugin";
 my $opt_suites;
 
 our $opt_verbose= 0;  # Verbose output, enable with --verbose