Update umc_chocolate.txt

-Removed cp_mojave_b2 from the Capture Point list
-Removed Koth_harvest_event from the KOTH list
-Added in various sections for unused maps separated by game mode
-Fixed the minimum player count tags not being used correctly
-Added in player limits to various large maps that require a certain amount of players to have fun
-Added all Halloween maps to an unused section called Holiday - Halloween
-Removed the "fun" map category because reasons...

**Note about unused sections**
Unused means they will not naturally show up in a map vote ever. However, if you want to play on one someday, you can nominate it. It will then show up in map vote.