Removing outdated assertions.

R=mstarzinger@chromium.org

Review URL: http://codereview.chromium.org/8497045

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9938 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/code-stubs.h

@@ -783,9 +783,6 @@ class StringCharCodeAtGenerator {
         index_not_number_(index_not_number),
         index_out_of_range_(index_out_of_range),
         index_flags_(index_flags) {
-    ASSERT(!scratch_.is(object_));
-    ASSERT(!scratch_.is(index_));
-    ASSERT(!scratch_.is(result_));
     ASSERT(!result_.is(object_));
     ASSERT(!result_.is(index_));
   }

src/x64/code-stubs-x64.cc

@@ -4097,7 +4097,6 @@ void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) {
                  Heap::kEmptyStringRootIndex);
   __ j(not_equal, &call_runtime_);
   // Get the first of the two parts.
-  ASSERT(!kScratchRegister.is(scratch_));
   __ movq(object_, FieldOperand(object_, ConsString::kFirstOffset));
   __ jmp(&assure_seq_string, Label::kNear);