Remove Array extension (#165)

Author: tinder-garricnahapetian

Sources/Layout/LayoutItem.swift

@@ -637,10 +637,3 @@ extension ViewLayoutItem: LayoutAnchoring {
     public var width: NSLayoutDimension { layoutItemView.width }
     public var height: NSLayoutDimension { layoutItemView.height }
 }
-
-extension Array where Element == NSLayoutConstraint.Attribute {
-
-    public static let edges: [NSLayoutConstraint.Attribute] = [.top, .left, .bottom, .right]
-    public static let vertical: [NSLayoutConstraint.Attribute] = [.top, .bottom]
-    public static let horizontal: [NSLayoutConstraint.Attribute] = [.left, .right]
-}

Tests/LayoutTests/LayoutItemTests.swift

@@ -709,10 +709,4 @@ final class LayoutItemTests: XCTestCase {
         expect(item.width) == item.layoutItemView.width
         expect(item.height) == item.layoutItemView.height
     }
-
-    func testLayoutConstraintAttributeArrayExtension() {
-        expect([NSLayoutConstraint.Attribute].edges) == [.top, .left, .bottom, .right]
-        expect([NSLayoutConstraint.Attribute].vertical) == [.top, .bottom]
-        expect([NSLayoutConstraint.Attribute].horizontal) == [.left, .right]
-    }
 }