fix(server): remove unreachable duplicate lines in _latest_ts

Delete the second vals/return pair after the first return (was
lines 718-719); behaviour unchanged: max of numeric values, else None.

cloud/server.py

@@ -769,8 +769,6 @@ def _read_agent_entries_multi(paths):
 def _latest_ts(values):
     vals = [v for v in values if isinstance(v, (int, float))]
     return max(vals) if vals else None
-    vals = [v for v in values if isinstance(v, (int, float))]
-    return max(vals) if vals else None
 
 
 def _agent_status_from_task(status):