[Android] MainActivity: Code cleaning

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Mon Mar 19 18:37:16 2018 +0100| [8957cc2dd31a32a093686af4b3d8c70d2933cd45] | committer: Geoffrey Métais

MainActivity: Code cleaning

> https://code.videolan.org/videolan/vlc-android/commit/8957cc2dd31a32a093686af4b3d8c70d2933cd45
---

 .../src/org/videolan/vlc/gui/MainActivity.java     | 83 ++++------------------
 .../src/org/videolan/vlc/gui/helpers/Navigator.kt  | 29 +++++++-
 2 files changed, 41 insertions(+), 71 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/8957cc2dd31a32a093686af4b3d8c70d2933cd45