Removed deprecated code

[radarhere]

Removing different segments of code that have been deprecated long enough.

Currently under discussion in #1087.

[wiredfool]

This doesn't look like it's been warned for deprecation

[radarhere]

It's been marked as deprecated in the docs since 1.1.5. I figured it was a sufficient length of time for even a docs warning to be effective. I'll restore the function and add a deprecation warning.

[wiredfool]

Seems like a reasonable batch of items to be removed. 2 things:

• I think it would be clearer to the people we're breaking if we replace the deprecated methods with a specific error pointing to a solution, rather than just removing them and having them get an attribute error. We're breaking other people's code here, we should be as nice as possible about it.
• We should really test this against django. If we break django, we're going to have a bad month.

[radarhere]

Okay, I've restored some of the methods, raising an Exception now instead.

I've looked through Django 1.8.4, and it only uses PIL/Pillow at a very high level. None of these changes should affect it.