Removing --enable-new-drag-and-drop, NEW_DRAG_AND_DROP is on by default now.

configure.in

@@ -1687,10 +1687,6 @@ MOZ_ARG_DISABLE_BOOL(double-buffer,
 [  --disable-double-buffer Disable double buffering],
   AC_DEFINE(NO_DOUBLE_BUFFER))
 
-MOZ_ARG_DISABLE_BOOL(new-drag-and-drop,
-[  --enable-new-drag-and-drop New Drag and Drop support],
-  AC_DEFINE(NEW_DRAG_AND_DROP))
-
 MOZ_ARG_ENABLE_BOOL(wrap-malloc,
 [  --enable-wrap-malloc    Wrap malloc calls (gnu linker only) (default=no) ],
   [ if test "$GNU_CC"; then