Merge pull request swiftlang#36482 from slavapestov/gencall-unused-var

IRGen: Remove unused variable

Author: slavapestov

lib/IRGen/GenCall.cpp

@@ -209,7 +209,7 @@ AsyncContextLayout::AsyncContextLayout(
     SILType errorType, bool canHaveValidError)
     : StructLayout(IGM, /*decl=*/nullptr, LayoutKind::NonHeapObject, strategy,
                    fieldTypeInfos, /*typeToFill*/ nullptr),
-      IGM(IGM), originalType(originalType), substitutedType(substitutedType),
+      originalType(originalType), substitutedType(substitutedType),
       substitutionMap(substitutionMap), errorType(errorType),
       canHaveValidError(canHaveValidError)  {
 #ifndef NDEBUG

lib/IRGen/GenCall.h

@@ -93,7 +93,6 @@ namespace irgen {
       ResumeParentExecutor = 1,
       Error = 1,
     };
-    IRGenModule &IGM;
     CanSILFunctionType originalType;
     CanSILFunctionType substitutedType;
     SubstitutionMap substitutionMap;