DOC: remove debugging code

src/doc/tutorials/single_file.rst

@@ -170,8 +170,8 @@ Records and synchronize those with LinkAhead.
       inserts, updates = crawler.synchronize(commit_changes=True, unique_names=True,
                                              crawled_data=records)
   
-      from IPython import embed
-      embed()
+      #from IPython import embed
+      #embed()
   
   def _parse_arguments():
       """Parse the arguments."""