[CLEANUP] Remove deprecated mouse events

[btecu]

No description provided.

[simonihmig]

Merging #19227 has caused some conflicts here, sorry about that! 😉

One test is failing in CI, I haven't really been able to identify it by looking through the logs though...

[simonihmig]

You can delete the whole if-block here, as that does the special handling of these non-bubbling events, and only leave the else-block instead. The (now removed) MOUSE_ENTER_LEAVE_MOVE_EVENTS feature flag can effectively be seen as being always false, so in that way this if-block is basically dead code. Also the EVENT_MAP itself can be removed.

[btecu]

Thanks @simonihmig, I've removed the entire if block.

[rwjblue]

Due to some complications with 3.27's migration to use real modules (and the resulting massive number of deprecations being triggered) we are not 100% certain (yet) that 4.0 will be the version just after v3.28.

In order to move ahead with v4.0 cleanup efforts (like this one), I've pushed a new branch that can serve as the target for breaking change PR's: https://github.com/emberjs/ember.js/tree/v4-cleanup.

I've updated this PR to target that branch, can you rebase against that branch and push an update?

Expand for an example of the commands needed for that rebase.

# starting from this PR's branch

git fetch origin
git rebase origin/v4-cleanup

# fix any conflicts

# push the rebase
git push -f

Those steps should be roughly what you need, but might need some tweaks based on your local repository setup (e.g. if you don't use origin for the main emberjs/ember.js repo you might have to use another remote name there).

Thank you for helping us push things forward!

[mixonic]

@btecu this PR was auto-closed when v4-cleanup was merged to master. Can you re-open for us to review/merge against master? This is excellent work and I don't want to lose it.