don't ask about making review videos anymore

I think it's fair to say that I don't usually do these anymore,
and if this really is desired it's probably better to ask specifically
for the occasion.

Author: Byron

.github/pull_request_template.md

@@ -1,7 +0,0 @@
-----
-
-Ok for [Byron](https://github.com/Byron) review the PR on video?
-
-- [ ] I give my permission to record review and upload on YouTube publicly
-
-If I think the review will be helpful for the community, then I might record and publish a video.