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

src/mips/macro-assembler-mips.cc

Index: src/mips/macro-assembler-mips.cc
diff --git a/src/mips/macro-assembler-mips.cc b/src/mips/macro-assembler-mips.cc
index 2a5ea1adc5314f4ff6ba421f02f8014e5134bb8e..5cc505d1679177a1054a173708457f018e7f2d10 100644
--- a/src/mips/macro-assembler-mips.cc
+++ b/src/mips/macro-assembler-mips.cc
@@ -4021,22 +4021,6 @@
 }
 
 
-void MacroAssembler::CmpWeakValue(Register match, Register value,
-                                  Handle<WeakCell> cell) {
-  li(match, Operand(cell));
-  lw(match, FieldMemOperand(match, WeakCell::kValueOffset));
-  Subu(match, value, match);
-}
-
-
-void MacroAssembler::LoadWeakValue(Register value, Handle<WeakCell> cell,
-                                   Label* miss) {
-  li(value, Operand(cell));
-  lw(value, FieldMemOperand(value, WeakCell::kValueOffset));
-  JumpIfNotSmi(value, miss);
-}
-
-
 void MacroAssembler::MovFromFloatResult(DoubleRegister dst) {
   if (IsMipsSoftFloatABI) {
     if (kArchEndian == kLittle) {