Remove jk/kj as Esc sequences

[di]

This is sometimes annoying to people who don't use it as vim will wait upon a j or k keypress before actually inserting the character.

Folks who like this should add this to their .vimrc.local. Here for copypastability:

" remap jk and kj to escape in insert mode
inoremap jk <Esc>
inoremap kj <Esc>

[nicholaides]

@elowing Merged this. If you still want to use it, add it to your .vimrc.local