Define MASTER_MYSOCK for ndb tests.

Needed for substitution in some tests.

mysql-test/suite/funcs_1/t/ndb_storedproc_06.tes:
  Remove unused file.
mysql-test/suite/funcs_1/t/ndb_storedproc_08.tes:
  Remove unused file.
mysql-test/suite/ndb/my.cnf:
  Export the socket path.

mysql-test/suite/funcs_1/t/ndb_storedproc_06.tes

-#### suite/funcs_1/t/innodb_storedproc_06.test
-#
-# 1. Check if InnoDB is available
---source include/have_innodb.inc
-
-# 2. Set $engine_type
-let $engine_type= innodb;
-
---source suite/funcs_1/storedproc/storedproc_06.inc

mysql-test/suite/funcs_1/t/ndb_storedproc_08.tes

-#### suite/funcs_1/t/innodb_storedproc_08.test
-#
-# 1. Check if InnoDB is available
---source include/have_innodb.inc
-
-# 2. Set $engine_type
-let $engine_type= innodb;
-
---source suite/funcs_1/storedproc/storedproc_08.inc

mysql-test/suite/ndb/my.cnf

@@ -13,6 +13,7 @@ ndbcluster
 
 [ENV]
 NDB_CONNECTSTRING=             @mysql_cluster.1.ndb_connectstring
+MASTER_MYSOCK=                 @mysqld.1.1.socket
 MASTER_MYPORT=                 @mysqld.1.1.port
 MASTER_MYPORT1=                @mysqld.2.1.port