Removed DatabaseMaker, read description.

The DatabaseMaker class was intended to create tables during runtime.
Realistically, this feature would not be used in our project. We only
need one table for our game, and that's the player database which at the
moment stores total kills, deaths, and assists along with the username,
password, and logged in (true/false).

Tables should not need to be created during runtime. Normally, tables
are created for a project before the project is released. That's why we
don't need to create tables during the runtime of the program, they
should already exist.