Revert of [turbofan] Initial support for monomorphic/polymorphic property loads.

src/compilation-dependencies.cc

Index: src/compilation-dependencies.cc
diff --git a/src/compilation-dependencies.cc b/src/compilation-dependencies.cc
index 2d48153db03458d2adf40c26ca64cafc8889600c..643b88ab0ec0875dd32c3f3dd414811862c3a492 100644
--- a/src/compilation-dependencies.cc
+++ b/src/compilation-dependencies.cc
@@ -106,15 +106,6 @@
 }
 
 
-void CompilationDependencies::AssumeMapStable(Handle<Map> map) {
-  DCHECK(map->is_stable());
-  // Do nothing if the map cannot transition.
-  if (map->CanTransition()) {
-    Insert(DependentCode::kPrototypeCheckGroup, map);
-  }
-}
-
-
 void CompilationDependencies::AssumeTransitionStable(
     Handle<AllocationSite> site) {
   // Do nothing if the object doesn't have any useful element transitions left.