remove cache property

Video.js

@@ -284,7 +284,6 @@ export default class Video extends Component {
 Video.propTypes = {
   /* Native only */
   src: PropTypes.object,
-  cache: PropTypes.bool,
   seek: PropTypes.oneOfType([
     PropTypes.number,
     PropTypes.object

ios/Video/RCTVideo.m

@@ -303,11 +303,6 @@ static NSString *const timedMetadata = @"timedMetadata";
 
 #pragma mark - Player and source
 
-- (void)setCache:(BOOL *)cache
-{
-  
-}
-
 - (void)setSrc:(NSDictionary *)source
 {
   [self removePlayerLayer];