atom: remove hack to delete exported bash funcs

atom/init.coffee

@@ -14,7 +14,5 @@ process.env.PATH += ':' + process.env.HOME + '/homebrew/bin/'
 process.env.PATH += ':/usr/local/bin'
 process.env.GOPATH = process.env.HOME + '/go'
 
-# Remove problematic environment variables that interfere with sub-shells
-delete process.env[k] for k of process.env when k.startsWith('BASH_FUNC_')
 # Ensure LANG is set for subprocesses
 process.env.LANG = 'en_US.UTF-8' unless process.env.LANG