Cleanup: Remove "gray text" logic from Omnibox

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor.mm

 // Copyright (c) 2011 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.
 
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor.h"
 
 #include "base/mac/sdk_forward_declarations.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"  // IDC_*
@@ skipping 575 matching lines @@
     return;
 
   [[FindPasteboard sharedInstance] setFindText:[selection string]];
 }
 
 - (void)drawRect:(NSRect)rect {
   AutocompleteTextFieldObserver* observer = [self observer];
   if (observer)
     observer->OnBeforeDrawRect();
   [super drawRect:rect];
-  autocomplete_text_field::DrawGrayTextAutocompletion(
-      [self textStorage],
-      [[self delegate] suggestText],
-      [[self delegate] suggestColor],
-      self,
-      [self bounds]);
   if (observer)
     observer->OnDidDrawRect();
 }
 
 // ThemedWindowDrawing implementation.
 
 - (void)windowDidChangeTheme {
   [self updateColorsToMatchTheme];
 }
 
 - (void)windowDidChangeActive {
 }
 
 @end