Fix simpletransform deprecation warnings

laser.py

@@ -28,7 +28,6 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 import inkex
 from inkex.transforms import Transform
 from inkex.paths import Path
-import simpletransform
 
 import os
 import math
@@ -927,8 +926,8 @@ class LaserGcode(inkex.Effect):
         while (g != root):
             if 'transform' in list(g.keys()):
                 t = g.get('transform')
-                t = simpletransform.parseTransform(t)
-                trans = simpletransform.composeTransform(t, trans) if trans != [] else t
+                t = [list(row) for row in Transform(t).matrix] 
+                trans = [list(row) for row in (Transform(t) * Transform(trans)).matrix] if trans != [] else t
                 print_(trans)
             g = g.getparent()
         return trans