Remove unnecessary if check

Author: aryan-25

Sources/AWSLambdaRuntimeCore/NewLambdaContext.swift

@@ -12,15 +12,10 @@
 //
 //===----------------------------------------------------------------------===//
 
+import Dispatch
 import Logging
 import NIOCore
 
-#if swift(<5.9)
-@preconcurrency import Dispatch
-#else
-import Dispatch
-#endif
-
 // MARK: - Context
 
 /// Lambda runtime context.