Respond to CR.

// FREEBIE

Signal/src/util/UIViewController+OWS.h

@@ -8,9 +8,7 @@ NS_ASSUME_NONNULL_BEGIN
 
 @interface UIViewController (OWS)
 
-- (UIBarButtonItem *)createOWSBackButtonWithSelector:(SEL)selector;
 - (UIBarButtonItem *)createOWSBackButton;
-- (void)useOWSBackButtonWithSelector:(SEL)selector;
 - (void)useOWSBackButton;
 
 @end

Signal/src/util/UIViewController+OWS.m

@@ -8,27 +8,17 @@ NS_ASSUME_NONNULL_BEGIN
 
 @implementation UIViewController (OWS)
 
-- (UIBarButtonItem *)createOWSBackButtonWithSelector:(SEL)selector
+- (UIBarButtonItem *)createOWSBackButton
 {
     UIImage *backImage = [UIImage imageNamed:@"NavBarBack"];
     OWSAssert(backImage);
     UIBarButtonItem *backItem = [[UIBarButtonItem alloc] initWithImage:backImage
                                                                  style:UIBarButtonItemStylePlain
                                                                 target:self
-                                                                action:selector];
+                                                                action:@selector(backButtonPressed:)];
     return backItem;
 }
 
-- (UIBarButtonItem *)createOWSBackButton
-{
-    return [self createOWSBackButtonWithSelector:@selector(backButtonPressed:)];
-}
-
-- (void)useOWSBackButtonWithSelector:(SEL)selector
-{
-    self.navigationItem.leftBarButtonItem = [self createOWSBackButtonWithSelector:selector];
-}
-
 - (void)useOWSBackButton
 {
     self.navigationItem.leftBarButtonItem = [self createOWSBackButton];

Signal/src/view controllers/MessageComposeTableViewController.m

@@ -117,7 +117,6 @@ NSString *const MessageComposeTableViewControllerCellContact = @"ContactTableVie
 - (void)viewDidLoad {
     [super viewDidLoad];
     [self.navigationController.navigationBar setTranslucent:NO];
-    [self useOWSBackButtonWithSelector:@selector(closeButton:)];
     
     self.navigationItem.rightBarButtonItem.accessibilityLabel = NSLocalizedString(
         @"CREATE_NEW_GROUP", @"Accessibility label for the create group new group button");
@@ -150,11 +149,6 @@ NSString *const MessageComposeTableViewControllerCellContact = @"ContactTableVie
     }
 }
 
-- (void)closeButton:(id)sender
-{
-    [self dismissViewControllerAnimated:YES completion:nil];
-}
-
 - (UILabel *)createLabelWithFirstLine:(NSString *)firstLine andSecondLine:(NSString *)secondLine {
     UILabel *label      = [[UILabel alloc] init];
     label.textColor     = [UIColor grayColor];