Revert "Added skeletons of viw classes for core and SingleEliminationTournament."

This reverts commit 3a5be42165a3e0659202c24f1fbb544e0d50b03f.
Added skeletons of view classes for core and SingleEliminationTournament
Added core view classes, modified controller class for view classes.
Added view class for Single Elimination Tournament. Added docs.

Added method documentation into core_view module.
Modified controller for Single Elimination Tournament.
Close #4.
Merge branch 'feat-4' into develop