[iOS] Remove dead code.

Remove code that is never executed.

Change-Id: Ife77329b7a911f2beae96b67c0efac582e54266d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2115653
Commit-Queue: Stepan Khapugin <stkhapugin@chromium.org>
Commit-Queue: Robbie Gibson <rkgibson@google.com>
Auto-Submit: Stepan Khapugin <stkhapugin@chromium.org>
Reviewed-by: Robbie Gibson <rkgibson@google.com>
Cr-Commit-Position: refs/heads/master@{#752479}

ios/chrome/browser/ui/omnibox/omnibox_text_field_ios.mm

@@ -264,16 +264,6 @@ NSString* const kOmniboxFadeAnimationKey = @"OmniboxFadeAnimation";
   } else {
     [self setTextAlignment:NSTextAlignmentNatural];
   }
-  return;
-  // Setting the empty field to Natural seems to let iOS update the cursor
-  // position when the keyboard language is changed.
-  if (!self.text.length) {
-    [self setTextAlignment:NSTextAlignmentNatural];
-    return;
-  }
-
-  NSTextAlignment alignment = [self bestTextAlignment];
-  [self setTextAlignment:alignment];
 }
 
 - (UIColor*)displayedTextColor {