Issue 8 - Unnecessry code removal

The TilesModelMerger is not providing anything
over what the base class already does. Unless
specific bugs or changed behaviour are discovered in
the base I see no point in keeping the code.

The pom is also not the way we do things. License
and Developers moved to plugin itself.

Change-Id: Ibe6fbba2b239ef17d86dab223c1a2c2a129dca76