remove unused file
Clean-up of small issues.

Removed unnecessary ';', conditional statements and unneeded 'return' in void methods./media/arthur/8765-4321/DCIM
More Clean-up using Android Studio

Change for to for-each where possible.
Fill empty catch statements.
Remove unused imports
Clean up of methods and fields where they are not used.
Merge pull request #903 from arthurbenemann/cleanUp

Clean up