swift style lint

Signal/src/ViewControllers/ConversationView/Cells/ConversationMediaView.swift

@@ -380,7 +380,7 @@ public class ConversationMediaView: UIView {
     private func configure(forError error: MediaError) {
         backgroundColor = (Theme.isDarkThemeEnabled ? .ows_gray90 : .ows_gray05)
         let icon: UIImage
-        switch (error) {
+        switch error {
         case .failed:
             guard let asset = UIImage(named: "media_retry") else {
                 owsFailDebug("Missing image")

Signal/src/ViewControllers/CropScaleImageViewController.swift

@@ -341,7 +341,7 @@ import SignalMessaging
     var lastPinchScale: CGFloat = 1.0
 
     @objc func handlePinch(sender: UIPinchGestureRecognizer) {
-        switch (sender.state) {
+        switch sender.state {
         case .possible:
             break
         case .began:
@@ -398,7 +398,7 @@ import SignalMessaging
     var srcTranslationAtPanStart: CGPoint = CGPoint.zero
 
     @objc func handlePan(sender: UIPanGestureRecognizer) {
-        switch (sender.state) {
+        switch sender.state {
         case .possible:
             break
         case .began:

Signal/src/views/MarqueeLabel.swift

@@ -1050,7 +1050,7 @@ open class MarqueeLabel: UILabel, CAAnimationDelegate {
         let adjustedColors: [CGColor]
         let trailingFadeNeeded = self.labelShouldScroll()
 
-        switch (type) {
+        switch type {
         case .continuousReverse, .rightLeft:
             adjustedColors = [(trailingFadeNeeded ? transparent : opaque), opaque, opaque, opaque]
 
@@ -1105,7 +1105,7 @@ open class MarqueeLabel: UILabel, CAAnimationDelegate {
     }
 
     private func transactionDurationType(_ labelType: MarqueeType, interval: CGFloat, delay: CGFloat) -> TimeInterval {
-        switch (labelType) {
+        switch labelType {
         case .leftRight, .rightLeft:
             return TimeInterval(2.0 * (delay + interval))
         default:

Signal/src/views/ReminderView.swift

@@ -1,5 +1,5 @@
 //
-//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
+//  Copyright (c) 2019 Open Whisper Systems. All rights reserved.
 //
 
 import Foundation
@@ -63,7 +63,7 @@ class ReminderView: UIView {
     func setupSubviews() {
         let textColor: UIColor
         let iconColor: UIColor
-        switch (mode) {
+        switch mode {
         case .nag:
             self.backgroundColor = UIColor.ows_reminderYellow
             textColor = UIColor.ows_gray90