travis: MDEV-13002 fixed - don't allow failures in MYSQL_TEST_SUITES=…

…plugins

Revert "travis: allowed_failures MYSQL_TEST_SUITES=plugins (MDEV-13002)"

This reverts commit c4cbc7a.

.travis.yml

@@ -62,13 +62,6 @@ matrix:
     - os: osx
       compiler: clang
       env: GCC_VERSION=6   TYPE=RelWithDebInfo MYSQL_TEST_SUITES=csv,federated,funcs_1,funcs_2,gcol,handler,heap,json,maria,percona,perfschema,plugins,multi_source,roles
-    # MDEV-13002 plugins.server_audit and plugins.thread_pool_server_audit test fail due to mysqltest error
-    - os: linux
-      compiler: gcc
-      env: GCC_VERSION=6   TYPE=RelWithDebInfo MYSQL_TEST_SUITES=csv,federated,funcs_1,funcs_2,gcol,handler,heap,json,maria,percona,perfschema,plugins,multi_source,roles
-    - os: linux
-      compiler: clang
-      env: GCC_VERSION=6   TYPE=RelWithDebInfo MYSQL_TEST_SUITES=csv,federated,funcs_1,funcs_2,gcol,handler,heap,json,maria,percona,perfschema,plugins,multi_source,roles
 
 # Matrix include for coverity
 #    - env: