[murmurhash] Re-enable ubsan for murmurhash.

Bug: 46777
Change-Id: I8a20774a27f9c63e3afc1aa53ee56faf25d3b90a
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/murmurhash.c/+/459034
Reviewed-by: Leonard Chan <leonardchan@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index a22c834..9e04c2a 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -7,8 +7,4 @@
     "murmurhash.c",
     "murmurhash.h",
   ]
-
-  # TODO(46777): UBSan has found an instance of undefined behavior in this target.
-  # Disable UBSan for this target temporarily until it is migrated into CI/CQ.
-  configs += [ "//build/config:temporarily_disable_ubsan_do_not_use" ]
 }