cleaning some warnings

Author: zookzook

lib/mongo_db_connection/utils.ex

@@ -2,7 +2,6 @@ defmodule Mongo.MongoDBConnection.Utils do
   @moduledoc false
   import Kernel, except: [send: 2]
   import Mongo.Messages
-  alias Mongo.Events
   use Bitwise
 
   # @reply_cursor_not_found   0x1

test/mongo/change_stream_test.exs

@@ -185,10 +185,8 @@ defmodule Mongo.ChangeStreamTest do
   @tag :mongo_3_6
   test "change stream: watch and resume_after", c do
 
-    top     = c.pid
-    catcher = c.catcher
-
-    me = self()
+    top = c.pid
+    me  = self()
     spawn(fn -> consumer_1(top, me) end)
     spawn(fn -> producer(top) end)