cmake: remove workarounds for cmake bugs #13248 and #12864

since long we use a different workaround, our own CPackRPM wrapper

cmake/plugin.cmake

@@ -236,9 +236,6 @@ MACRO(MYSQL_ADD_PLUGIN)
         IF (NOT ARG_CLIENT)
           SET(CPACK_RPM_${ARG_COMPONENT}_PACKAGE_REQUIRES "MariaDB${ver}" PARENT_SCOPE)
         ENDIF()
-        # workarounds for cmake issues #13248 and #12864:
-        SET(CPACK_RPM_${ARG_COMPONENT}_PACKAGE_PROVIDES "cmake_bug_13248" PARENT_SCOPE)
-        SET(CPACK_RPM_${ARG_COMPONENT}_PACKAGE_OBSOLETES "cmake_bug_13248" PARENT_SCOPE)
         SET(CPACK_RPM_${ARG_COMPONENT}_USER_FILELIST ${ignored} PARENT_SCOPE)
         IF(NOT ARG_CLIENT AND NOT ARG_CONFIG AND UNIX)
           SET(ARG_CONFIG "${CMAKE_CURRENT_BINARY_DIR}/${target}.cnf")