replace logging of qdelaunay string with a write to /tmp/qdel.out

interp/grid/delaunay.py

@@ -194,9 +194,10 @@ class grid(basegrid):
     """
     logging.debug('start')
     qdelaunay_string = get_qdelaunay_dump_str(self)
-    logging.info(qdelaunay_string)
+
     with open('/tmp/qdel.out', 'w') as of:
       of.write(qdelaunay_string)
+
     cell_to_cells = []
     for matcher in grid.cell_re.finditer(qdelaunay_string):
       d = matcher.groupdict()