tests: Do not specify filename when runing gr_unittest

This fixes the following warning

DEPRECATED: Using filename with gr_unittest does no longer have any effect.

Change-Id: I7d6dbc32ff794ebf2bc116fa7437062e6780b85f
diff --git a/python/qa_tch_h_decoder.py b/python/qa_tch_h_decoder.py
index b0bd469..7d64d64 100755
--- a/python/qa_tch_h_decoder.py
+++ b/python/qa_tch_h_decoder.py
@@ -187,4 +187,4 @@
             []) #Must return an empty array
 
 if __name__ == '__main__':
-    gr_unittest.run(qa_tch_h_decoder, "qa_tch_h_decoder.xml")
+    gr_unittest.run(qa_tch_h_decoder)