revert change to IMAGE_SMOOTHING_DISABLED

src/ol/source/common.js

@@ -1,7 +1,6 @@
 /**
  * @module ol/source/common
  */
-import {FIREFOX, SAFARI, WEBKIT} from '../has.js';
 
 /**
  * Default WMS version.
@@ -13,10 +12,7 @@ export const DEFAULT_WMS_VERSION = '1.3.0';
  * Context options to disable image smoothing.
  * @type {Object}
  */
-export const IMAGE_SMOOTHING_DISABLED =
+export const IMAGE_SMOOTHING_DISABLED = {
-  FIREFOX || SAFARI || WEBKIT
-    ? {imageSmoothingEnabled: false}
-    : {
   imageSmoothingEnabled: false,
   msImageSmoothingEnabled: false,
 };