CVE-2024-27072 media: usbtv: Remove useless locks in usbtv_video_free()

In the Linux kernel, the following vulnerability has been resolved: media: usbtv: Remove useless locks in usbtvvideofree Remove locks calls in usbtvvideofree because are useless and may led to a deadlock as reported here: https://syzkaller.appspot.com/x/bisect.txt?x=166dc872180000 Also remove...