Update galera disabled.def file

mysql-test/suite/galera/disabled.def

@@ -10,7 +10,6 @@
 #
 ##############################################################################
 
-GCF-1081 : MDEV-18283 Galera test failure on galera.GCF-1081
 GCF-939 : MDEV-21520 galera.GCF-939
 MW-329 : MDEV-19962 Galera test failure on MW-329
 galera_as_slave_ctas : MDEV-28378 timeout
@@ -19,10 +18,7 @@ galera_bf_abort_group_commit : MDEV-18282 Galera test failure on galera.galera_b
 galera_bf_lock_wait : MDEV-21597 wsrep::transaction::start_transaction(): Assertion `active() == false' failed
 galera_encrypt_tmp_files : Get error failed to enable encryption of temporary files
 galera_gcache_recover_manytrx : MDEV-18834 Galera test failure
-galera_kill_largechanges : MDEV-18179 Galera test failure on galera.galera_kill_largechanges
-galera_mdl_race : MDEV-21524 galera.galera_mdl_race
 galera_parallel_simple : MDEV-20318 galera.galera_parallel_simple fails
-galera_pc_ignore_sb : MDEV-20888 galera.galera_pc_ignore_sb
 galera_pc_recovery : MDEV-25199 cluster fails to start up
 galera_shutdown_nonprim : MDEV-21493 galera.galera_shutdown_nonprim
 galera_var_ignore_apply_errors : MDEV-26770 galera_var_ignore_apply_errors fails Server did not transition to READY state