remove changes in backdeploy lib, not needed

Author: ktoso

stdlib/public/BackDeployConcurrency/CompatibilityOverrideConcurrency.def

@@ -273,17 +273,6 @@ OVERRIDE_TASK_GROUP(taskGroup_isCancelled, bool,
                     SWIFT_EXPORT_FROM(swift_Concurrency), SWIFT_CC(swift),
                     swift::, (TaskGroup *group), (group))
 
-OVERRIDE_TASK_GROUP(taskGroup_wait_all, void,
-                    SWIFT_EXPORT_FROM(swift_Concurrency), SWIFT_CC(swiftasync),
-                    swift::,
-                    (OpaqueValue *resultPointer,
-                        SWIFT_ASYNC_CONTEXT AsyncContext *callerContext,
-                        TaskGroup *_group,
-                        ThrowingTaskFutureWaitContinuationFunction *resumeFn,
-                        AsyncContext *callContext),
-                    (resultPointer, callerContext, _group, resumeFn,
-                        callContext))
-
 OVERRIDE_TASK_GROUP(taskGroup_cancelAll, void,
                     SWIFT_EXPORT_FROM(swift_Concurrency), SWIFT_CC(swift),
                     swift::, (TaskGroup *group), (group))

stdlib/public/BackDeployConcurrency/ConcurrencyRuntime.h

@@ -173,9 +173,6 @@ void swift_taskGroup_wait_next_throwing(
 SWIFT_EXPORT_FROM(swift_Concurrency) SWIFT_CC(swift)
 void swift_taskGroup_initialize(TaskGroup *group, const Metadata *T);
 
-SWIFT_EXPORT_FROM(swift_Concurrency) SWIFT_CC(swift)
-void swift_taskGroup_initializeWithFlags(size_t flags, TaskGroup *group, const Metadata *T);
-
 /// Attach a child task to the parent task's task group record.
 ///
 /// This function MUST be called from the AsyncTask running the task group.