Disable another video test that failed intermittently in master

https://jenkins.testeng.edx.org/job/edx-all-tests-auto-master/SHARD=3,TEST_SUITE=cms-acceptance/1081/testReport/CMS/Video%20Component%20_%20Check%20that%20position%20is%20stored%20on%20page%20refresh,%20position%20within%20start-end%20range/Then_I_see_video_starts_playing_from__0_16__position/

Same underlying issue as #2629