When BS camera was frozen last Saturday in alog74157, the CAMERA_SERVO guardian recognized that the BS camera was frozen, turned off the camera servo, and went to WAIT_FOR_CAMERA state. However, the camera checker in the WAIT_FOR_CAMERA state somehow did not work and the camera servo was turned on again and the guardian was stuck in a infinite loop. I have not figured out why the camera checker in the WAIT_FOR_CAMERA state does not work, but I think we don't need the WAIT_FOR_CAMERA state anymore. The WAIT_FOR_CAMERA state was made to avoid the short camera freeze issue in alog68756, but I think the issue was solved in alog71593. So I removed the WAIT_FOR_CAMERA state in the guardian.