Uncomment deprecation warnings

[imaustink]

These were commented out because of issues down steam caused by tests being dependent on can-log/dev.warn. These have since been addressed with can-test-helpers.

[phillipskevin]

Did all of the modules in canjs/canjs get updated to use the new modules?

[imaustink]

It would appear not. I found references to the following modules after running the canjs tests locally with this branch of can-util:

js/assign/assign
js/dev/dev
js/log/log
js/cid-map/cid-map
js/cid-set/cid-set
js/global/global

I will write a cod mod for these and update everything before merging this.