trim game moves to max ply
trim game moves to max ply

This reverts commit 978bdad69ec675e76b88ad757337b8ffd1c80ad8.

clarkerubber/lila,luanlv/lila,luanlv/lila,luanlv/lila,arex1337/lila,arex1337/lila,luanlv/lila,luanlv/lila,clarkerubber/lila,clarkerubber/lila,arex1337/lila,luanlv/lila,luanlv/lila,clarkerubber/lila,clarkerubber/lila,arex1337/lila,arex1337/lila,clarkerubber/lila,arex1337/lila,arex1337/lila,clarkerubber/lila