Remove commented code in test

Tests/KingfisherTests/ImageViewExtensionTests.swift

@@ -80,7 +80,6 @@ class ImageViewExtensionTests: XCTestCase {
             let value = result.value!
             XCTAssertTrue(value.image.renderEqual(to: testImage))
             XCTAssertTrue(self.imageView.image!.renderEqual(to: testImage))
-            //XCTAssertEqual(self.imageView.kf.taskIdentifier, Source.Identifier.current)
             
             XCTAssertEqual(value.cacheType, .none)
             XCTAssertTrue(Thread.isMainThread)
@@ -127,7 +126,6 @@ class ImageViewExtensionTests: XCTestCase {
             let value = result.value!
             XCTAssertTrue(value.image.renderEqual(to: testImage))
             XCTAssertTrue(self.imageView.image!.renderEqual(to: testImage))
-            //XCTAssertEqual(self.imageView.kf.taskIdentifier, Source.Identifier.current)
 
             XCTAssertEqual(value.cacheType, .none)
             XCTAssertTrue(Thread.isMainThread)

Tests/KingfisherTests/NSButtonExtensionTests.swift

@@ -77,7 +77,6 @@ class NSButtonExtensionTests: XCTestCase {
             XCTAssertNotNil(image)
             XCTAssertTrue(image!.renderEqual(to: testImage))
             XCTAssertTrue(self.button.image!.renderEqual(to: testImage))
-            //XCTAssertEqual(self.button.kf.taskIdentifier, Source.Identifier.current)
             XCTAssertEqual(result.value!.cacheType, .none)
             
             exp.fulfill()
@@ -99,7 +98,6 @@ class NSButtonExtensionTests: XCTestCase {
             XCTAssertNotNil(image)
             XCTAssertTrue(image!.renderEqual(to: testImage))
             XCTAssertTrue(self.button.alternateImage!.renderEqual(to: testImage))
-            //XCTAssertEqual(self.button.kf.alternateTaskIdentifier, Source.Identifier.current)
             XCTAssertEqual(result.value!.cacheType, .none)
             
             exp.fulfill()