bash_completion: allow remove to complete normal files

Previously, we only completed files that had already been manually
deleted. That behaviour made no sense. We now complete unmodified,
modified, and deleted files.

contrib/bash_completion

@@ -255,7 +255,7 shopt -s extglob
 	    _hg_status "mar"
 	;;
 	remove)
-	    _hg_status "d"
+	    _hg_status "mcd"
 	;;
 	forget)
 	    _hg_status "a"