fix(dpkg-source,pkgadd): remove redundant "_filedir -d"

The directory names are generated by default with `_filedir` and
`_filedir ext`, so an independent `_filedir -d` would not be needed.

Author: akinomyoga

completions/dpkg-source

@@ -29,12 +29,10 @@ _comp_cmd_dpkg_source()
         unpack)
             case $prev in
                 -x)
-                    _filedir -d
                     _filedir 'dsc'
                     ;;
                 *)
                     COMPREPLY=($(compgen -W "$unpackopts" -- "$cur"))
-                    _filedir -d
                     _filedir
                     ;;
             esac
@@ -52,7 +50,6 @@ _comp_cmd_dpkg_source()
                     # -i: <regexp> filter out files to ignore diffs of.
                     # -I: filter out files when building tarballs.
                     # return directory names and file names
-                    _filedir -d
                     _filedir
                     ;;
                 -F)

completions/pkgadd

@@ -24,7 +24,6 @@ _comp_cmd_pkgadd()
     case $prev in
         -d)
             _filedir pkg
-            _filedir -d
             ;;
         -a | -r | -V)
             _filedir