remove pointless warning DataIssue

parsers/survex.py

@@ -1385,6 +1385,7 @@ class LoadingSurvex:
                 # print(message, file=sys.stderr)
                 return False
             else: # probably a top level file immediately in the loser directory. No worries.
+                if not cavepath.startswith("fixedpts"):
                     message = f" ! Warning: no cave identifiable for '{svxid}.svx'  {cavepath=} "
                     print("\n" + message)
                     stash_data_issue(parser="survex", message=message, url="{svxid}.svx", sb=(svxid))