Templates should not include MIT license

[citelao]

Our code is not MIT licensed, and it is frustrating to remove this line from every file we make :).

[citelao]

Clarification: we should not remove the copyright notice from every file, just the template files. Those get copied verbatim into user's code when they create code based on those templates.

[citelao]

Looks to be fixed by #3745

[haonanttt]

Fixed by #3745