Fix a bug that would cause subzero to fail when --threads=0.

src/IceTranslator.cpp

 //===- subzero/src/IceTranslator.cpp - ICE to machine code ------*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file defines the general driver class for translating ICE to
@@ skipping 39 matching lines @@
            << "' potentially conflicts with name '" << Name << "'.\n";
     return true;
   }
   return false;
 }
 
 void Translator::translateFcn(std::unique_ptr<Cfg> Func) {
   Ctx->optQueueBlockingPush(std::move(Func));
 }
 
-void Translator::emitConstants() {
-  if (!getErrorStatus())
-    TargetDataLowering::createLowering(Ctx)->lowerConstants();
-}
-
-void Translator::transferErrorCode() const {
-  if (getErrorStatus())
-    Ctx->getErrorStatus()->assign(getErrorStatus().value());
-}
-
 void Translator::lowerGlobals(
     std::unique_ptr<VariableDeclarationList> VariableDeclarations) {
   EmitterWorkItem *Item = new EmitterWorkItem(getNextSequenceNumber(),
                                               VariableDeclarations.release());
   Ctx->emitQueueBlockingPush(Item);
 }