eliminate code related to --no-ir-gen

src/IceClFlags.h

Index: src/IceClFlags.h
diff --git a/src/IceClFlags.h b/src/IceClFlags.h
index a514a9bcd77ca0ee0769468dd579ac198970b712..1beb2a09785677f6cd8d0f8c8982c184420aeae2 100644
--- a/src/IceClFlags.h
+++ b/src/IceClFlags.h
@@ -70,11 +70,6 @@ public:
   bool getDisableInternal() const { return DisableInternal; }
   void setDisableInternal(bool NewValue) { DisableInternal = NewValue; }
 
-  bool getDisableIRGeneration() const {
-    return BuildDefs::disableIrGen() && DisableIRGeneration;
-  }
-  void setDisableIRGeneration(bool NewValue) { DisableIRGeneration = NewValue; }
-
   bool getDisableTranslation() const { return DisableTranslation; }
   void setDisableTranslation(bool NewValue) { DisableTranslation = NewValue; }
 
@@ -260,7 +255,6 @@ private:
   bool DecorateAsm;
   bool DisableHybridAssembly;
   bool DisableInternal;
-  bool DisableIRGeneration;
   bool DisableTranslation;
   bool DumpStats;
   bool EnableBlockProfile;