Revert "Fix PendingDeprecationWarning with Packer.encoding"

This reverts commit 88ec399.

Author: bfredl

neovim/msgpack_rpc/msgpack_stream.py

@@ -20,7 +20,8 @@ class MsgpackStream(object):
     def __init__(self, event_loop):
         """Wrap `event_loop` on a msgpack-aware interface."""
         self.loop = event_loop
-        self._packer = Packer(unicode_errors=unicode_errors_default)
+        self._packer = Packer(encoding='utf-8',
+                              unicode_errors=unicode_errors_default)
         self._unpacker = Unpacker()
         self._message_cb = None
 

setup.cfg

@@ -1,7 +1,2 @@
 [flake8]
 ignore = D211,E731,D401
-
-[tool:pytest]
-filterwarnings =
-    once::DeprecationWarning
-    once::PendingDeprecationWarning