remove latin-1 flag

src/x64/code-stubs-x64.cc

Index: src/x64/code-stubs-x64.cc
diff --git a/src/x64/code-stubs-x64.cc b/src/x64/code-stubs-x64.cc
index 1ca690753c23fa1f3beb6ed0c3974b31d4a986f3..601c7c05c33cdd1575f9f84b0cfcbdc260287d31 100644
--- a/src/x64/code-stubs-x64.cc
+++ b/src/x64/code-stubs-x64.cc
@@ -5756,32 +5756,22 @@ void StringCompareStub::GenerateCompareFlatAsciiStrings(MacroAssembler* masm,
   // Compare lengths (precomputed).
   __ bind(&compare_lengths);
   __ SmiTest(length_difference);
-#ifndef ENABLE_LATIN_1
-  __ j(not_zero, &result_not_equal, Label::kNear);
-#else
   Label length_not_equal;
   __ j(not_zero, &length_not_equal, Label::kNear);
-#endif
 
   // Result is EQUAL.
   __ Move(rax, Smi::FromInt(EQUAL));
   __ ret(0);
 
   Label result_greater;
-#ifdef ENABLE_LATIN_1
   Label result_less;
   __ bind(&length_not_equal);
   __ j(greater, &result_greater, Label::kNear);
   __ jmp(&result_less, Label::kNear);
-#endif
   __ bind(&result_not_equal);
   // Unequal comparison of left to right, either character or length.
-#ifndef ENABLE_LATIN_1
-  __ j(greater, &result_greater, Label::kNear);
-#else
   __ j(above, &result_greater, Label::kNear);
   __ bind(&result_less);
-#endif
 
   // Result is LESS.
   __ Move(rax, Smi::FromInt(LESS));