Remove Deprecations Targeted at 5.0

[wagenet]

• remove-owner-inject [CLEANUP] Remove deprecated injection #20382
• deprecate-ember-error [CLEANUP] Remove deprecated @ember/error package #20379
• ember-polyfills.deprecate-assign [CLEANUP] Remove deprecated assign polyfill #20380
• deprecate-auto-location [CLEANUP] Remove deprecated auto-location #20406
• routing.transition-methods [CLEANUP] Remove deprecated routing.transition-methods #20413
• ember-string.add-package [CLEANUP] Remove deprecated @ember/string package #20381
• ember-string.htmlsafe-ishtmlsafe [CLEANUP] Remove deprecated @ember/string package #20381
• ember-strings [CLEANUP] Remove deprecated @ember/string package #20381
• ember-string.from-ember-module [CLEANUP] Remove deprecated @ember/string package #20381

[chriskrycho]

I have a WIP branch locally for deprecate-auto-location. It's a bit more finicky than some of the others, but I will have it up by end of week for sure.

[sandstrom]

@chriskrycho Let me know if you have any questions (assuming this is #19510)

[chriskrycho]

It is! Alas, "end of week" did not happen because of 🔥 at work, but it should happen this coming week.

[chriskrycho]

@sandstrom if you are able to finish getting #20406 done (I gave it a good start but have been waaaaaay underwater at work) that would be 💯. Let us know!

[wagenet]

We did it!