cleanup: remove galera/wsrep magic from mtr

mysql-test/include/galera_diff.inc

@@ -1,100 +0,0 @@
-# galera_diff.inc
-# ===============
-#
-# Description
-# -----------
-# Compare the output of the given statement on all the nodes of the cluster.
-#
-# Parameters
-# ----------
-# $galera_diff_statement
-#   Statement for which the output would be compared.
-# 
-# $galera_diff_database
-#   Database against which the above statement would be executed.
-#   (Default : test)
-#
-# $galera_diff_servers
-#   Comma separated list of servers to executed the diff statement on. If not
-#   set, a list of servers will be generated based on $galera_cluster_size.
-#
-# $galerra_debug
-#   Print debug information.
-#
-
-if (!$galera_diff_statement)
-{
-  --die ERROR IN TEST: $galera_diff_statement must be set before sourcing include/galera_diff.inc
-}
-
---let $_galera_diff_database = $galera_diff_database
-if (!$_galera_diff_database)
-{
-  --let $_galera_diff_database = test 
-}
-
---let $_galera_diff_servers= $galera_diff_servers
-if (!$_galera_diff_servers)
-{
-  --let $_i= $galera_cluster_size
-  --let $_galera_diff_servers= 
-  while ($_i)
-  {
-    --let $_galera_diff_servers= $_i,$_galera_diff_servers
-    --dec $_i
-  }
-}
-if ($galera_debug)
-{
-  --echo \$galera_diff_servers= '$_galera_diff_servers'
-}
-
-if (!$galera_debug)
-{
-  --disable_query_log
-}
-
-# Generate file containing $galera_diff_statement. We don't pass the
-# statement on the command line, because it would be subject to shell
-# substitutions.
---let $write_to_file= GENERATE
---let $write_var= $galera_diff_statement
---source include/write_var_to_file.inc
---let $_galera_diff_statement_file= $write_to_file
-
-if (!$galera_debug)
-{
-  --enable_query_log
-}
-
-# Compare all servers.
---let $_galera_diff_first= 1
-while ($_galera_diff_servers)
-{
-  # Set $_galera_diff_server_i to the first number in the list
-  --let $_galera_diff_server_i= `SELECT SUBSTRING_INDEX('$_galera_diff_servers', ',', 1)`
-  # Remove $_galera_diff_server_i from the list
-  --let $_galera_diff_servers= `SELECT SUBSTRING('$_galera_diff_servers', LENGTH('$_galera_diff_server_i') + 2)`
-
-  # Execute statement
-  --let $_galera_diff_file= $MYSQLTEST_VARDIR/tmp/_galera_diff_server-$_galera_diff_server_i.tmp
-  --exec $MYSQL --defaults-group-suffix=.$_galera_diff_server_i $_galera_diff_database < $_galera_diff_statement_file > $_galera_diff_file
-
-  # Compare
-  if (!$_galera_diff_first)
-  {
-    if ($galera_debug)
-    {
-      --echo diffing $_galera_diff_file and $_galera_diff_prev_file
-    }
-    --diff_files $_galera_diff_file $_galera_diff_prev_file
-    --remove_file $_galera_diff_prev_file
-  }
-  --let $_galera_diff_prev_file= $_galera_diff_file
-  --let $_galera_diff_first= 0
-}
-
-# Cleanup
---remove_file $_galera_diff_prev_file
---remove_file $_galera_diff_statement_file
-