Do not hash match on license query runs

This is redundant as an automaton match pass has already been done.

Signed-off-by: Philippe Ombredanne <[email protected]>

Author: pombredanne

src/licensedcode/index.py

@@ -526,12 +526,6 @@ def get_approximate_matches(self, query, matched_qspans=None, **kwargs):
 
         for query_run in query.query_runs:
 
-            # per query run hash matching just in case we are lucky
-            hash_matches = match_hash.hash_match(self, query_run)
-            if hash_matches:
-                matches.extend(hash_matches)
-                continue
-
             if not query_run.is_matchable(include_low=False, qspans=matched_qspans):
                 continue