[Android] Remove dead VideoGroups classes

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Fri Oct  4 09:32:40 2019 +0200| [2fc2c889198462bfd76f76357e61f29f9db7813a] | committer: Geoffrey Métais

Remove dead VideoGroups classes

> https://code.videolan.org/videolan/vlc-android/commit/2fc2c889198462bfd76f76357e61f29f9db7813a
---

 vlc-android/res/layout/video_grid_card.xml         | 147 +++++++++--------
 vlc-android/res/layout/video_list_card.xml         |  33 ++--
 vlc-android/res/layout/videogroup_item.xml         |  87 -----------
 vlc-android/res/layout/videogroups_fragment.xml    | 134 ----------------
 .../videolan/vlc/gui/video/VideoGridFragment.kt    |   7 +-
 .../org/videolan/vlc/gui/video/VideoListAdapter.kt |  11 +-
 .../vlc/gui/videogroups/VideoGroupsAdapter.kt      |  89 -----------
 .../vlc/gui/videogroups/VideoGroupsFragment.kt     | 174 ---------------------
 .../vlc/viewmodels/mobile/VideogroupsViewModel.kt  |  67 --------
 9 files changed, 96 insertions(+), 653 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/2fc2c889198462bfd76f76357e61f29f9db7813a