Remove TeamSpirit.js

[pmaxhogan]

No one likes it.

[vihanb]

idea replace with GoatSpirit which replace al avatar with random goat picture

[vihanb]

:O idea: CaprineSpirit where evil code reviewer become sheep and PPCGers become goat

[pmaxhogan]

ChallengeSpirit: most upvotes on recent challenges (encourages quality, not crap)