Update pylint setting for removed lints

Some of the lints we were disabling have been removed.

Author: oschwald

Diff for: .pylintrc

@@ -1,6 +1,3 @@
-[MESSAGES CONTROL]
-disable=C0330
-
 [BASIC]
 
 no-docstring-rgx=_.*

Diff for: maxminddb/decoder.py

@@ -48,9 +48,7 @@ def _decode_array(self, size: int, offset: int) -> Tuple[List[Record], int]:
             array.append(value)
         return array, offset
 
-    def _decode_boolean(  # pylint: disable=no-self-use
-        self, size: int, offset: int
-    ) -> Tuple[bool, int]:
+    def _decode_boolean(self, size: int, offset: int) -> Tuple[bool, int]:
         return size != 0, offset
 
     def _decode_bytes(self, size: int, offset: int) -> Tuple[bytes, int]: