Issue #1751 - Remove Mac code behind MOZ_WIDGET_TOOLKIT == 'cocoa'

toolkit/themes/osx/global/filefield.css

@@ -1,38 +0,0 @@
-/*
-# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-*/
-
-.fileFieldIcon {
-  width: 16px;
-  height: 16px;
-}
-
-.fileFieldIcon[disabled="true"] {
-  opacity: 0.5;
-}
-
-filefield {
-  margin: 4px;
-  margin-inline-start: 27px;
-  -moz-appearance: textfield;
-}
-
-.fileFieldContentBox {
-  margin: -3px;
-  background-color: rgba(230, 230, 230, 0.6);
-  color: -moz-DialogText;
-  padding-top: 2px;
-  padding-bottom: 2px;
-  padding-inline-start: 5px;
-  padding-inline-end: 3px;
-}
-
-.fileFieldLabel {
-  -moz-appearance: none;
-  background-color: transparent;
-  border: none;
-  margin: 0 4px;
-}