mac/asan: stop turning off detect_odr_violations

Looks like it's no longer needed.

Change-Id: Idbf3d5a8fbd4f75c2c0f7c998e2617b8542dfb5c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2062296
Commit-Queue: Robert Sesek <rsesek@chromium.org>
Auto-Submit: Nico Weber <thakis@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Cr-Commit-Position: refs/heads/master@{#742687}

build/sanitizers/sanitizer_options.cc

@@ -51,8 +51,7 @@ const char kAsanDefaultOptions[] =
 #elif defined(OS_MACOSX)
 const char* kAsanDefaultOptions =
     "check_printf=1 use_sigaltstack=1 strip_path_prefix=/../../ "
-    "fast_unwind_on_fatal=1 detect_stack_use_after_return=1 "
-    "detect_odr_violation=0 ";
+    "fast_unwind_on_fatal=1 detect_stack_use_after_return=1 ";
 
 #elif defined(OS_WIN)
 const char* kAsanDefaultOptions =