Minor cleanup (#559)

* Remove unnecessary Foundation imports

* Remove unnecessary Sendable requirement on JSONEncoder

* Remove logging middleware from performance test

Author: adam-fowler

Sources/Hummingbird/Codable/JSON/JSONCoding.swift

@@ -48,14 +48,3 @@ extension JSONDecoder: RequestDecoder {
         return try self.decode(T.self, from: buffer)
     }
 }
-
-/// `RequestDecoder` and `ResponseEncoder` both require conformance to `Sendable`. Given
-/// `JSONEncoder`` and `JSONDecoder`` conform to Sendable in macOS 13+ I think I can just
-/// back date the conformance to all versions of Swift, macOS we support
-#if hasFeature(RetroactiveAttribute)
-extension JSONEncoder: @retroactive @unchecked Sendable {}
-extension JSONDecoder: @retroactive @unchecked Sendable {}
-#else
-extension JSONEncoder: @unchecked Sendable {}
-extension JSONDecoder: @unchecked Sendable {}
-#endif

Sources/Hummingbird/Error/HTTPError.swift

@@ -12,7 +12,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-import Foundation
 import HTTPTypes
 import NIOCore
 import NIOFoundationCompat

Sources/Hummingbird/Files/FileProvider.swift

@@ -12,7 +12,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-import Foundation
 import NIOPosix
 
 /// Protocol for file provider type used by ``FileMiddleware``

Sources/HummingbirdTesting/TestClient+types.swift

@@ -12,7 +12,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-import Foundation
 import HTTPTypes
 import NIOCore
 

Sources/PerformanceTest/main.swift

@@ -25,9 +25,6 @@ let port = env.get("SERVER_PORT", as: Int.self) ?? 8080
 // create app
 let elg = MultiThreadedEventLoopGroup(numberOfThreads: 4)
 var router = Router()
-router.addMiddleware {
-    LogRequestsMiddleware(.info)
-}
 
 // number of raw requests
 // ./wrk -c 128 -d 15s -t 8 http://localhost:8080