Help with compiling topic

Hey guys,

Just got out of surgery and am looking at building my own copy of SlimLP. I am currently syncing the repo at the moment, my query was, how do I remove certain apps before compiling?

I don't use Email, Exchange e.t.c. so wanted to remove them from the rom.

Sorry if it's been asked before. Still a little woozy from the drugs and have been trying to search.