chore: Remove unreachable return statements (#17622)

* Remove unreachable return statements

* Remove unnecessary int casting

superset/utils/network.py

@@ -30,16 +30,14 @@ def is_port_open(host: str, port: int) -> bool:
  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  s.settimeout(PORT_TIMEOUT)
  try:
- s.connect((host, int(port)))
+ s.connect((host, port))
  s.shutdown(socket.SHUT_RDWR)
  return True
  except socket.error:
  return False
  finally:
  s.close()
 
- return False
-
 
 def is_hostname_valid(host: str) -> bool:
  """
@@ -51,8 +49,6 @@ def is_hostname_valid(host: str) -> bool:
  except socket.gaierror:
  return False
 
- return False
-
 
 def is_host_up(host: str) -> bool:
  """