Remove fpath/compinit code from github and npm plugins

plugins/github/github.plugin.zsh

@@ -5,7 +5,3 @@ if [ "$commands[(I)hub]" ]; then
     function git(){hub "$@"}
 fi
 
-# add github completion function to path
-fpath=($ZSH/plugins/github $fpath)
-autoload -U compinit
-compinit -i

plugins/npm/npm.plugin.zsh

@@ -1,4 +0,0 @@
-# add npm completion function to path
-fpath=($ZSH/plugins/npm $fpath)
-autoload -U compinit
-compinit -i