Remove obsolete print statements

sru/almasru.py

@@ -131,9 +131,7 @@ class RecordRetriever:
         return xml_list
 
     def _gen_xml(self, alma_query: str, num_recs: int):
-        print(num_recs)
         for startrecord in range(1, num_recs+1, 10):
-            print(startrecord)
             sru_url = self._create_url(alma_query, startrecord)
             sru_xml = self._response_to_xml(sru_url)
             self._raise_error_sru(sru_xml)