Revert "Attack controls for player added"

This reverts commit a6a11510845526a3a4b779bc713f1dacdbec0659.
Revert "Player: modifies ArrayLists with every keystroke"

This reverts commit 76a6672cd382f7d33d4cd777a9d8fe7f2e05e987.
Revert "Game: movement of weapons, enemies and collision"

This reverts commit fcb57f29aac97df12a24f7a74016a5a23cf30d3c.
Revert "Enemy class: movement in random direction added"

This reverts commit 573655a1b6c68a2aafa00e987b2becbdf32eacf6.