Remove broken %_Log functionality.

src/ia32/macro-assembler-ia32.h

Index: src/ia32/macro-assembler-ia32.h
diff --git a/src/ia32/macro-assembler-ia32.h b/src/ia32/macro-assembler-ia32.h
index f13444ab0e37bdc85f740d1f6956eb7f74d0cbdf..f8c2401323b7c5be32c3a05b5949ab21fe5bf473 100644
--- a/src/ia32/macro-assembler-ia32.h
+++ b/src/ia32/macro-assembler-ia32.h
@@ -702,10 +702,6 @@ class MacroAssembler: public Assembler {
                                Label* miss,
                                bool miss_on_bound_function = false);
 
-  // Generates code for reporting that an illegal operation has
-  // occurred.
-  void IllegalOperation(int num_arguments);
-
   // Picks out an array index from the hash field.
   // Register use:
   //   hash - holds the index's hash. Clobbered.