[region-isolation] Delete an unused old form diagnostic.

Author: gottesmm

include/swift/AST/DiagnosticsSIL.def

@@ -948,12 +948,6 @@ ERROR(regionbasedisolation_unknown_pattern, none,
 // Old Transfer Non Sendable Diagnostics
 //
 
-ERROR(regionbasedisolation_transfer_yields_race_no_isolation, none,
-      "sending value of non-Sendable type %0 with later accesses risks causing data races",
-      (Type))
-ERROR(regionbasedisolation_transfer_yields_race_with_isolation, none,
-      "sending value of non-Sendable type %0 with later accesses from %1 context to %2 context risks causing data races",
-      (Type, ActorIsolation, ActorIsolation))
 ERROR(regionbasedisolation_isolated_capture_yields_race, none,
       "%1 closure captures value of non-Sendable type %0 from %2 context; later accesses to value could race",
       (Type, ActorIsolation, ActorIsolation))

lib/SILOptimizer/Mandatory/TransferNonSendable.cpp

@@ -713,16 +713,6 @@ class UseAfterTransferDiagnosticEmitter {
     emitRequireInstDiagnostics();
   }
 
-  void emitTypedRaceWithUnknownIsolationCrossing(SILLocation loc,
-                                                 Type inferredType) {
-    diagnoseError(loc,
-                  diag::regionbasedisolation_transfer_yields_race_no_isolation,
-                  inferredType)
-        .highlight(loc.getSourceRange())
-        .limitBehaviorIf(getBehaviorLimit());
-    emitRequireInstDiagnostics();
-  }
-
   void emitNamedIsolationCrossingDueToCapture(
       SILLocation loc, Identifier name,
       SILIsolationInfo namedValuesIsolationInfo,