Don't cleanup ANSI chars and newlines in messages anymore

These characters might be there deliberately. If they should be cleaned
up, it can easily be done later with a filter.

lib/rackstash/message.rb

@@ -57,8 +57,6 @@ module Rackstash
     def cleanup(msg)
       msg = msg.inspect unless msg.is_a?(String)
       msg = utf8_encode(msg)
-      # remove useless ANSI color codes
-      msg.gsub!(/\e\[[0-9;]*m/, EMPTY_STRING)
       msg.freeze
     end
 
@@ -66,8 +64,7 @@ module Rackstash
       str.to_s.encode(
         Encoding::UTF_8,
         invalid: :replace,
-        undef: :replace,
-        universal_newline: true
+        undef: :replace
       )
     end
 

spec/rackstash/message_spec.rb

@@ -13,22 +13,6 @@ require 'rackstash/message'
 
 describe Rackstash::Message do
   describe '#initialize' do
-    it 'cleans the message' do
-      messages = [
-        ["First\r\nSecond",         "First\nSecond"],
-        ["First\r\nSecond\n\r",     "First\nSecond\n\n"],
-        ["Foo\r\n\rBar",            "Foo\n\nBar"],
-        ["\r \tWord\n\nPhrase\n",   "\n \tWord\n\nPhrase\n"],
-        ["\e[31mRED TEXT\e[0m",     'RED TEXT']
-      ]
-
-      messages.each do |msg, clean|
-        message = described_class.new(msg)
-        expect(message.message).to eql clean
-        expect(message.message).to be_frozen
-      end
-    end
-
     it 'encodes the message as UTF-8' do
       utf8_str = 'Dönerstraße'
       latin_str = utf8_str.encode(Encoding::ISO8859_9)