X64: Remove temporary compiler and assembler tests, fix typeof x == 'object' test.

src/x64/codegen-x64.h

Index: src/x64/codegen-x64.h
===================================================================
--- src/x64/codegen-x64.h	(revision 2296)
+++ src/x64/codegen-x64.h	(working copy)
@@ -294,15 +294,6 @@
                                Handle<Script> script,
                                bool is_eval);
 
-  // During implementation of CodeGenerator, this call creates a
-  // CodeGenerator instance, and calls GenCode on it with a null
-  // function literal.  CodeGenerator will then construct and return
-  // a simple dummy function.  Call this during bootstrapping before
-  // trying to compile any real functions, to get CodeGenerator up
-  // and running.
-  // TODO(X64): Remove once we can get through the bootstrapping process.
-  static void TestCodeGenerator();
-
 #ifdef ENABLE_LOGGING_AND_PROFILING
   static bool ShouldGenerateLog(Expression* type);
 #endif