Optimize plugin loading so that only one call to compinit is required

plugins/brew/brew.plugin.zsh

@@ -1,2 +0,0 @@
-# add brew completion function to path
-fpath=($ZSH/plugins/brew $fpath)

plugins/cpanm/cpanm.plugin.zsh

@@ -1,2 +0,0 @@
-# add cpanm completion function to path
-fpath=($ZSH/plugins/cpanm $fpath)

plugins/gem/gem.plugin.zsh

@@ -1,2 +0,0 @@
-# add gem completion function to path
-fpath=($ZSH/plugins/gem $fpath)

plugins/github/github.plugin.zsh

@@ -1,2 +0,0 @@
-# add github completion function to path
-fpath=($ZSH/plugins/github $fpath)

plugins/macports/macports.plugin.zsh

@@ -6,5 +6,3 @@ alias puni="sudo port uninstall inactive"
 alias puo="sudo port upgrade outdated"
 alias pup="psu && puo"
 
-# add macports completion function to path
-fpath=($ZSH/plugins/macports $fpath)

plugins/pip/pip.plugin.zsh

@@ -1,2 +0,0 @@
-# add brew completion function to path
-fpath=($ZSH/plugins/pip $fpath)

plugins/vagrant/vagrant.plugin.zsh

@@ -1 +0,0 @@
-fpath=($ZSH/plugins/vagrant $fpath)