Remove extraneous include from objects.h

Change-Id: Ic682a8e0a3340fe20a0f6300508197e6ec8f211d
Reviewed-on: https://chromium-review.googlesource.com/963710Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Daniel Clifford <danno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#51953}

src/objects.h

@@ -12,7 +12,6 @@
 #include "src/bailout-reason.h"
 #include "src/base/bits.h"
 #include "src/base/flags.h"
-#include "src/builtins/builtins-definitions.h"
 #include "src/checks.h"
 #include "src/elements-kind.h"
 #include "src/field-index.h"