Revert of Collect type feedback on result of Math.[round|ceil|floor]

src/x64/macro-assembler-x64.cc

Index: src/x64/macro-assembler-x64.cc
diff --git a/src/x64/macro-assembler-x64.cc b/src/x64/macro-assembler-x64.cc
index e6a06dbc08b5220b3230eed33de09cec662ac56b..0e70826df2297d003f28c3de27577394fd9b57a2 100644
--- a/src/x64/macro-assembler-x64.cc
+++ b/src/x64/macro-assembler-x64.cc
@@ -730,15 +730,6 @@
   // Load the JavaScript builtin function from the builtins object.
   GetBuiltinFunction(rdi, id);
   movp(target, FieldOperand(rdi, JSFunction::kCodeEntryOffset));
-}
-
-
-void MacroAssembler::BranchIfNotBuiltin(Register function, Register temp,
-                                        BuiltinFunctionId id, Label* miss) {
-  movp(temp, FieldOperand(function, JSFunction::kSharedFunctionInfoOffset));
-  movp(temp, FieldOperand(temp, SharedFunctionInfo::kFunctionDataOffset));
-  Cmp(temp, Smi::FromInt(id));
-  j(not_equal, miss);
 }