Solves pylint warnings

pydtn/__init__.py

@@ -251,7 +251,7 @@ class Buffer:
     Can be removed from while being iterated over.
     """
 
-    def __init__(self, capacity=None, **options):
+    def __init__(self, capacity=None):
         """
         Create a buffer.
 
@@ -411,17 +411,19 @@ class Node:
 
         Removes the sent packet from the buffer.
         """
+        # pylint: disable=unused-argument
         self.buffer.remove(packet)
 
     def send_failure(self, packet, target):
         """Call when a send fails."""
+        # pylint: disable=unused-argument
         pass
 
     def packet_expiry(self, packet):
         """Call when a packet expires."""
         self.buffer.remove(packet)
 
-    def recv(self, packet, source=None):
+    def recv(self, packet):
         """
         Recieve a packet.