objtool: mem*() are not uaccess safe

For mysterious raisins I listed the new __asan_mem*() functions as
being uaccess safe, this is giving objtool fails on KASAN builds
because these functions call out to the actual __mem*() functions
which are not marked uaccess safe.

Removing it doesn't make the robots unhappy.

Fixes: 69d4c0d3 ("entry, kasan, x86: Disallow overriding mem*() functions")
Reported-by: "Paul E. McKenney" <paulmck@kernel.org>
Bisected-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20230126182302.GA687063@paulmck-ThinkPad-P17-Gen-1

tools/objtool/check.c

@@ -1083,9 +1083,6 @@ static const char *uaccess_safe_builtin[] = {
 	"__asan_store16_noabort",
 	"__kasan_check_read",
 	"__kasan_check_write",
-	"__asan_memset",
-	"__asan_memmove",
-	"__asan_memcpy",
 	/* KASAN in-line */
 	"__asan_report_load_n_noabort",
 	"__asan_report_load1_noabort",