REFACT: Fix docs/types issues

Author: mzen17

scapy/fields.py

@@ -850,6 +850,7 @@ def __init__(self, name, default):
         Field.__init__(self, name, default, "4s")
 
     def _concat_ip(self, ip_string):
+        # type: (str) -> bytes
         """Concat a IP str of form IP,IP,IP and returns it as bytes
         Backcompatible if IP is a single IP.
         :param ip_string: String of the IP to be packed"""
@@ -866,7 +867,7 @@ def _concat_ip(self, ip_string):
         # Concatenate packed IPs into a single byte string
         return b''.join(packed_ips)
 
-    def h2i(self, pkt, x, multiple=False):
+    def h2i(self, pkt, x):
         # type: (Optional[Packet], Union[AnyStr, List[AnyStr]]) -> Any
         if isinstance(x, bytes):
             x = plain_str(x)  # type: ignore