completion/ivy: ivy-extra-directories = nil

Removes the ./ and ../ entries from ivy file completion commands. These
can still be typed in to navigate buffers.

modules/completion/ivy/config.el

@@ -63,6 +63,8 @@ immediately runs it on the current candidate (ending the ivy session)."
         ivy-wrap t
         ivy-fixed-height-minibuffer t
         projectile-completion-system 'ivy
+        ;; Remove ./ and ../ from file commands
+        ivy-extra-directories nil
         ;; disable magic slash on non-match
         ivy-magic-slash-non-match-action nil
         ;; don't show recent files in switch-buffer