Remove unused utility function

ai_web_common/rpc/core.py

@@ -122,13 +122,6 @@ def _get_pool(cls, host, port, **kwargs):
         return p
 
 
-def _split_host_port(netloc):
-    if ':' not in netloc:
-        return netloc, 80
-    host, port = netloc.split(':', 1)
-    return host, int(port)
-
-
 def _ssl_context(cert_path, key_path, ca_path):
     context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
     context.verify_mode = ssl.CERT_REQUIRED