Access: remove special case for "-" (standard input)

"-" is now converted to "fd://0" by the input code. And file:///- really
means /- (which is a valid file name).

modules/access/dvdnav.c

@@ -1367,9 +1367,6 @@ static int ProbeDVD( demux_t *p_demux, char *psz_name )
         return VLC_SUCCESS;
     }
 
-    if( !strcmp( psz_name, "-" ) ) /* stdin -> file access */
-        return VLC_EGENERIC;
-
     if( (i_fd = utf8_open( psz_name, O_RDONLY |O_NONBLOCK )) == -1 )
     {
         return VLC_SUCCESS; /* Let dvdnav_open() do the probing */

modules/access/file.c

@@ -140,8 +140,6 @@ int Open( vlc_object_t *p_this )
 
     if (!strcasecmp (p_access->psz_access, "fd"))
         fd = dup (atoi (path));
-    else if (!strcmp (path, "-"))
-        fd = dup (0);
     else
     {
         msg_Dbg (p_access, "opening file `%s'", path);

modules/access/mmap.c

@@ -93,13 +93,8 @@ static int Open (vlc_object_t *p_this)
 
     STANDARD_BLOCK_ACCESS_INIT;
 
-    if (!strcmp (p_access->psz_path, "-"))
-        fd = dup (0);
-    else
-    {
     msg_Dbg (p_access, "opening file %s", path);
     fd = utf8_open (path, O_RDONLY | O_NOCTTY);
-    }
 
     if (fd == -1)
     {