Remove CheckNotRegistersEqual regexp-masm function from all architectures.

src/regexp-macro-assembler-tracer.cc

Index: src/regexp-macro-assembler-tracer.cc
diff --git a/src/regexp-macro-assembler-tracer.cc b/src/regexp-macro-assembler-tracer.cc
index b7aeac48db38a96ba5f2673a44fc7e09b41ee06e..882ed43ef8d3626249d0d5c42a4cceba1acf87b5 100644
--- a/src/regexp-macro-assembler-tracer.cc
+++ b/src/regexp-macro-assembler-tracer.cc
@@ -381,17 +381,6 @@ void RegExpMacroAssemblerTracer::CheckNotBackReferenceIgnoreCase(
 }
 
 
-void RegExpMacroAssemblerTracer::CheckNotRegistersEqual(int reg1,
-                                                        int reg2,
-                                                        Label* on_not_equal) {
-  PrintF(" CheckNotRegistersEqual(reg1=%d, reg2=%d, label[%08x]);\n",
-         reg1,
-         reg2,
-         LabelToInt(on_not_equal));
-  assembler_->CheckNotRegistersEqual(reg1, reg2, on_not_equal);
-}
-
-
 void RegExpMacroAssemblerTracer::CheckCharacters(Vector<const uc16> str,
                                                  int cp_offset,
                                                  Label* on_failure,