Remove MEDIA_RECOMMENDATION_CARD_UPDATE flag

It clears the flag and deletes all the files of the old version.

Fixes:266739309
Test: atest MediaControlPanelTest
Test: atest MediaViewControllerTest
Test: Checked using the media tester app, the new version of media
recommendations is showing.

Change-Id: I2e0eeb414b39017ee3b3ccb318ff61cd52c01dda