Remove fullscreen control inside bloom player and defer to the Kolibri control

[rtibbles]

The fullscreen option within the player is duplicating the Enter fullscreen option above it (this is directly configurable in the Bloom Player, so we can just turn it off there)

Originally posted by @rtibbles in https://github.com/learningequality/kolibri/issues/12586#issuecomment-2380239850