Remove unused imports and Guava deprecateds methods

[NayXegp]

No description provided.

[NayXegp]

@md-5 I need to do some changes or something ?

[md-5]

Looks ok, just doesn’t actually change anything except for adding to the history.
Will probably be merged at some point otherwise it will keep popping up (same thing did for Bukkit yesterday)

[NayXegp]

ok ty, maybe you could also look to some other pull requests
Some are open for months or years

[md-5]

I'll accept this once, but please note that this is not a precedent for running automated cosmetic cleanups across the codebase.
It tends to dirty the commit history and create unnecessary merge conflicts for no real gain.