Removed deprecated function IsRTLUILayout().

ios/chrome/browser/ui/rtl_geometry.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef RTL_GEOMETRY_H_
 #define RTL_GEOMETRY_H_
 
 #include <CoreGraphics/CoreGraphics.h>
 #import <UIKit/UIKit.h>
 
@@ skipping 149 matching lines @@
 // Autolayout utilities
 
 // Returns the correct NSLayoutFormatOption for the current OS and build. This
 // will return NSLayoutFormatDirectionLeadingToTrailing when a full RTL flip
 // is correct, and NSLayoutFormatDirectionLeftToRight when layout should not
 // change with text direction.
 // Generally speaking this option should be applied to any whole-page layouts;
 // smaller sections of views should be determined case by case.
 NSLayoutFormatOptions LayoutOptionForRTLSupport();
 
-// Deprecated -- use UseRTLLayout() instead.
-// Whether the UI is configured for right to left layout.
-// The implementation will use the local in order to get the UI layout direction
-// for version of iOS under 9.
-// TODO(jbbegue): Use base::i18n::IsRTL() instead when it will support RTL
-// pseudo language. Remove that method once base::i18n::IsRTL() is fixed.
-// crbug/514625.
-bool IsRTLUILayout();
-
 #endif  // RTL_GEOMETRY_H_