Revert "boardgame.Game grows applyingMove() bool, which returns true if a move is actively being applied right now. Part of #755."
Revert "boardgame.Game grows applyingMove() bool, which returns true if a move is actively being applied right now. Part of #755."

This reverts commit 332851f5138bf872dcb092840d8fe750d27abbeb.

jkomoros/boardgame,jkomoros/boardgame,jkomoros/boardgame