There's a simple way to remove this announcement.
Go to:
1. YouTube -> Videos
2. Click "View Copyright Info"
3. New page is open, choose "I want to learn more about the dispute process" in the bottom.
4. Next page. Right bottom, click "Take me to the dispute form"
5. Now you must make everything excatly the same in the dispute claim:
-Select the reason for your dispute: choose #2.
-Please explain briefly: just write something that it's a bootleg, free for fans blah blah.2. This video uses copyrighted material in a manner that does not require approval of the copyright holder. It is a fair use under copyright law.
-Signature: whatever
Now seems like it's the most important:
-Statement of Good Faith:
-> just copy and paste this text to the form.I have a good faith belief that the material was disabled as a result of a mistake or misidentification, and that I am not intentionally abusing this dispute process.
6.Continue -> Submit Dispute -> OK.
I had something about 50 videos with notes about 3rd part content. Now I'm clean. At least, for now. It looks like.