Remove allowedToMove from GameState message

[timonegk]

Proposed changes

AllowedToMove is not actually sent by the GameController and instead determined by our receiver. That logic should be moved to the behavior (see bit-bots/bitbots_behavior#171 and bit-bots/humanoid_league_msgs#28).

Necessary checks

• [ ] Update package version
• [ ] Run catkin build
• [ ] Write documentation
• [ ] Create issues for future work
• [ ] Test on your machine
• [ ] Test on the robot
• [x] Put the PR on our Project board