Remove deprecated Canvas Rotation plugin

[pllim]

It is deprecated in Jdaviz 3.9 as part of:

• #2179

Should be removed some time after. Is Jdaviz 4.0 too soon?

🐱

[kecnry]

I think usually we've been doing (at least) 2 minor releases. So 3.11 at the earliest?

[pllim]

Hmm when will we decide to upgrade to 4.0 ?

Given we're not following strict semver, maybe 3.11 is okay.