[cleanup] Remove unnecessary include

R=mslekova@chromium.org

Bug: v8:8834
Change-Id: I51ff4441a80fd92bbdf400b5b92ff2d399250864
Reviewed-on: https://chromium-review.googlesource.com/c/1489077Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59877}

src/compiler/type-narrowing-reducer.cc

@@ -5,7 +5,6 @@
 #include "src/compiler/type-narrowing-reducer.h"
 
 #include "src/compiler/js-graph.h"
-#include "src/objects-inl.h"
 
 namespace v8 {
 namespace internal {