Remove superflous variable

Author: klippx

spec/protocol/message_set_spec.rb

@@ -78,8 +78,6 @@ def decode(data)
     end
 
     it "sets offsets correctly for compressed messages with relative offsets" do
-      compressor = Kafka::Compressor.new(codec_name: :snappy, threshold: 1, instrumenter: instrumenter)
-
       message1 = Kafka::Protocol::Message.new(value: "hello1", offset: 0)
       message2 = Kafka::Protocol::Message.new(value: "hello2", offset: 1)
       message3 = Kafka::Protocol::Message.new(value: "hello3", offset: 2)
@@ -102,8 +100,6 @@ def decode(data)
     end
 
     it "keeps the predefined offsets for messages delivered in 0.9 format" do
-      compressor = Kafka::Compressor.new(codec_name: :snappy, threshold: 1, instrumenter: instrumenter)
-
       message1 = Kafka::Protocol::Message.new(value: "hello1", offset: 997)
       message2 = Kafka::Protocol::Message.new(value: "hello2", offset: 999)
       message3 = Kafka::Protocol::Message.new(value: "hello3", offset: 1000)