don't wipe out the DESTDIR

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4609 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/js/Makefile.in

@@ -32,7 +32,6 @@ VPATH        = @srcdir@
 srcdir       = @srcdir@
 top_srcdir   = @top_srcdir@
 
-DESTDIR      =
 prefix       = @prefix@
 exec_prefix  = @exec_prefix@
 datarootdir  = @datarootdir@