Revert "mariadb: force disable AUTH_PAM plugin"

This reverts commit cd435aa56b.

packages/mariadb/cmake-build_configurations-mysql_release.cmake.patch

@@ -1,12 +0,0 @@
-diff -uNr mariadb-10.4.8/cmake/build_configurations/mysql_release.cmake mariadb-10.4.8.mod/cmake/build_configurations/mysql_release.cmake
---- mariadb-10.4.8/cmake/build_configurations/mysql_release.cmake	2019-09-09 00:02:29.000000000 +0300
-+++ mariadb-10.4.8.mod/cmake/build_configurations/mysql_release.cmake	2019-09-18 16:39:38.173014925 +0300
-@@ -124,7 +124,7 @@
- 
- IF(UNIX)
-   SET(WITH_EXTRA_CHARSETS all CACHE STRING "")
--  SET(PLUGIN_AUTH_PAM YES)
-+  SET(PLUGIN_AUTH_PAM NO)
- 
-   IF(CMAKE_SYSTEM_NAME STREQUAL "Linux")
-     IF(NOT IGNORE_AIO_CHECK)