NFC: Remove unused include

hamishknight · hamishknight · commit 062fd6e24ffc · 2023-10-09T20:29:02.000+01:00
diff --git a/include/swift/AST/Decl.h b/include/swift/AST/Decl.h
@@ -24,7 +24,6 @@
 #include "swift/AST/ClangNode.h"
 #include "swift/AST/ConcreteDeclRef.h"
 #include "swift/AST/DefaultArgumentKind.h"
-#include "swift/AST/DiagnosticConsumer.h"
 #include "swift/AST/DiagnosticEngine.h"
 #include "swift/AST/FreestandingMacroExpansion.h"
 #include "swift/AST/GenericParamKey.h"
