Removed some container views from TalkBack/SwitchAccess

Some container views in shade were not marked as not important for
accessibility, so SwitchAccess was announcing them as "Unknown Item".
Removed them here instead of adding labels as selecting on them did no
meaningful action/did a redundant action.

Test: manually tried to select the views using SwitchAccess
Bug: 200246909
Change-Id: I6a5061703c6082fca596c4dd055b1d4f86579bcb