Remove some incorrect references to ExecutorRef

Author: rjmccall

include/swift/ABI/Task.h

@@ -519,17 +519,12 @@ class YieldingAsyncContext : public AsyncContext {
   TaskContinuationFunction * __ptrauth_swift_async_context_yield
     YieldToParent;
 
-  /// The executor that the parent context needs to be yielded to on.
-  ExecutorRef YieldToParentExecutor;
-
   YieldingAsyncContext(AsyncContextFlags flags,
                        TaskContinuationFunction *resumeParent,
                        TaskContinuationFunction *yieldToParent,
-                       ExecutorRef yieldToParentExecutor,
                        AsyncContext *parent)
     : AsyncContext(flags, resumeParent, parent),
-      YieldToParent(yieldToParent),
-      YieldToParentExecutor(yieldToParentExecutor) {}
+      YieldToParent(yieldToParent) {}
 
   static bool classof(const AsyncContext *context) {
     return context->Flags.getKind() == AsyncContextKind::Yielding;

lib/IRGen/IRGenModule.cpp

@@ -630,8 +630,7 @@ IRGenModule::IRGenModule(IRGenerator &irgen,
   SwiftJobPtrTy = SwiftJobTy->getPointerTo(DefaultAS);
 
   // using TaskContinuationFunction =
-  //   SWIFT_CC(swift)
-  //   void (AsyncTask *, ExecutorRef, AsyncContext *);
+  //   SWIFT_CC(swift) void (SWIFT_ASYNC_CONTEXT AsyncContext *);
   TaskContinuationFunctionTy = llvm::FunctionType::get(
       VoidTy, {SwiftContextPtrTy}, /*isVarArg*/ false);
   TaskContinuationFunctionPtrTy = TaskContinuationFunctionTy->getPointerTo();