Remove unused PLUGINS variable

(cherry picked from commit 91df5145)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

configure.ac

@@ -4194,11 +4194,6 @@ dnl  Restore *FLAGS
 dnl
 VLC_RESTORE_FLAGS
 
-dnl
-dnl Sort the modules list
-dnl
-PLUGINS=$( (for i in `echo $PLUGINS`; do echo $i; done)|sort|xargs )
-
 dnl
 dnl  Configuration is finished
 dnl

m4/vlc.m4

@@ -7,7 +7,6 @@ m4_pattern_allow([^PKG_CONFIG(_LIBDIR)?$])
 
 AC_DEFUN([VLC_ADD_PLUGIN], [
   m4_foreach_w([element], [$1], [
-    [PLUGINS="${PLUGINS} ]element["]
     AC_SUBST([LTLIB]element, [lib]element[_plugin.la])
   ])
 ])