PNaCl bitcode: Remove support for TYPE_CODE_FUNCTION_OLD

include/llvm/Bitcode/NaCl/NaClLLVMBitCodes.h

 //===- NaClLLVMBitCodes.h ---------------------------------------*- C++ -*-===//
 //     Enum values for the NaCl bitcode wire format
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ skipping 69 matching lines @@
 
     // Type Codes
     TYPE_CODE_VOID     =  2,    // VOID
     TYPE_CODE_FLOAT    =  3,    // FLOAT
     TYPE_CODE_DOUBLE   =  4,    // DOUBLE
     TYPE_CODE_LABEL    =  5,    // LABEL
     TYPE_CODE_OPAQUE   =  6,    // OPAQUE
     TYPE_CODE_INTEGER  =  7,    // INTEGER: [width]
     TYPE_CODE_POINTER  =  8,    // POINTER: [pointee type]
 
-    TYPE_CODE_FUNCTION_OLD = 9, // FUNCTION: [vararg, attrid, retty,
-                                //            paramty x N]
+    TYPE_CODE_FUNCTION_OLD = 9, // Not used in PNaCl.
 
     TYPE_CODE_HALF     =  10,   // HALF
 
     TYPE_CODE_ARRAY    = 11,    // ARRAY: [numelts, eltty]
     TYPE_CODE_VECTOR   = 12,    // VECTOR: [numelts, eltty]
 
     // These are not with the other floating point types because they're
     // a late addition, and putting them in the right place breaks
     // binary compatibility.
     TYPE_CODE_X86_FP80 = 13,    // X86 LONG DOUBLE
@@ skipping 221 matching lines @@
     FUNC_CODE_INST_FORWARDTYPEREF = 43 // TYPE: [opval, ty]
   };
 
   enum NaClUseListCodes {
     USELIST_CODE_ENTRY = 1   // USELIST_CODE_ENTRY: TBD.
   };
 } // End naclbitc namespace
 } // End llvm namespace
 
 #endif