Revert of Use weak cells in map checks in polymorphic ICs.

src/x87/macro-assembler-x87.cc

Index: src/x87/macro-assembler-x87.cc
diff --git a/src/x87/macro-assembler-x87.cc b/src/x87/macro-assembler-x87.cc
index 0d23cffafb75f961fa168caadb5410dc9876308a..d6d24530715e9fb998560c45d250eed7482144fa 100644
--- a/src/x87/macro-assembler-x87.cc
+++ b/src/x87/macro-assembler-x87.cc
@@ -2544,21 +2544,6 @@
 }
 
 
-void MacroAssembler::CmpWeakValue(Register value, Handle<WeakCell> cell,
-                                  Register scratch) {
-  mov(scratch, cell);
-  cmp(value, FieldOperand(scratch, WeakCell::kValueOffset));
-}
-
-
-void MacroAssembler::LoadWeakValue(Register value, Handle<WeakCell> cell,
-                                   Label* miss) {
-  mov(value, cell);
-  mov(value, FieldOperand(value, WeakCell::kValueOffset));
-  JumpIfSmi(value, miss);
-}
-
-
 void MacroAssembler::Ret() {
   ret(0);
 }