Use site-functions directory for all zsh plugins

zsh/completions/_quickdel

@@ -1,15 +0,0 @@
-#compdef quickdel
-
-# zsh completions for 'quickdel'
-# automatically generated with http://github.com/RobSis/zsh-completion-generator
-local arguments
-
-arguments=(
-  {-d,--directories-only}'[only delete directories]'
-  {-h,--help}'[print this help page]'
-  {-i,--no-ignore}'[do not ignore .gitignore and .fdignore]'
-  {-I,--no-ignore-vcs}'[do not ignore .gitignore]'
-  '*:filename:_files'
-)
-
-_arguments -s $arguments