8345628: [BACKOUT] JDK-8287122 Use gcc12 -ftrivial-auto-var-init=pattern in debug builds

Reviewed-by: erikj

Author: David Holmes

make/autoconf/flags-cflags.m4

@@ -481,11 +481,6 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER],
   else
     DEBUG_CFLAGS_JDK="-DDEBUG"
 
-    if test "x$TOOLCHAIN_TYPE" = xgcc; then
-      DEBUG_CFLAGS_JDK="DEBUG_CFLAGS_JDK -ftrivial-auto-var-init=pattern"
-      DEBUG_CFLAGS_JVM="-ftrivial-auto-var-init=pattern"
-    fi
-
     if test "x$TOOLCHAIN_TYPE" = xclang && test "x$OPENJDK_TARGET_OS" = xaix; then
       DEBUG_CFLAGS_JVM="-fpic -mcmodel=large"
     fi