code: public static boolean removeFromCache(String imageUri, DiskCache diskCache) {
  		File image = diskCache.get(imageUri);
  		return image != null && image.exists() && image.delete();
  	}
docs: Removed cached image file from disk cache (if image was cached in disk cache before)
  
  @return <b>true</b> - if cached image file existed and was deleted; <b>false</b> - otherwise.