wscript: drop repeated autowaf.set_options - it is enough to set at top level

luasession/wscript

@@ -1,11 +1,10 @@
 #!/usr/bin/env python
-from waflib.extras import autowaf as autowaf
 import waflib.Utils as Utils
 import os
 import sys
 
 def options(opt):
-    autowaf.set_options(opt)
+    pass
 
 def configure(conf):
     conf.load('misc')