PPC: Remove obsolete functionality from the MacroAssemblers.

Port 64e3bad3

Original commit message:
    This is uncontroversial the dead code removal part of
    https://codereview.chromium.org/1307943013, which was
    previously landed, but got reverted because of DOM
    breakage that requires more investigation.

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1311123004

Cr-Commit-Position: refs/heads/master@{#30590}

src/ppc/macro-assembler-ppc.cc

@@ -1123,23 +1123,6 @@ void MacroAssembler::InvokeFunction(Handle<JSFunction> function,
 }
 
 
-void MacroAssembler::IsObjectJSObjectType(Register heap_object, Register map,
-                                          Register scratch, Label* fail) {
-  LoadP(map, FieldMemOperand(heap_object, HeapObject::kMapOffset));
-  IsInstanceJSObjectType(map, scratch, fail);
-}
-
-
-void MacroAssembler::IsInstanceJSObjectType(Register map, Register scratch,
-                                            Label* fail) {
-  lbz(scratch, FieldMemOperand(map, Map::kInstanceTypeOffset));
-  cmpi(scratch, Operand(FIRST_NONCALLABLE_SPEC_OBJECT_TYPE));
-  blt(fail);
-  cmpi(scratch, Operand(LAST_NONCALLABLE_SPEC_OBJECT_TYPE));
-  bgt(fail);
-}
-
-
 void MacroAssembler::IsObjectJSStringType(Register object, Register scratch,
                                           Label* fail) {
   DCHECK(kNotStringTag != 0);

src/ppc/macro-assembler-ppc.h

@@ -549,11 +549,6 @@ class MacroAssembler : public Assembler {
                       const ParameterCount& actual, InvokeFlag flag,
                       const CallWrapper& call_wrapper);
 
-  void IsObjectJSObjectType(Register heap_object, Register map,
-                            Register scratch, Label* fail);
-
-  void IsInstanceJSObjectType(Register map, Register scratch, Label* fail);
-
   void IsObjectJSStringType(Register object, Register scratch, Label* fail);
 
   void IsObjectNameType(Register object, Register scratch, Label* fail);