Removed CodeClimate badge & configuration

CodeClimate's recommendations have been a mix of irrelevant and
actively harmful for some time. The latest problem is that it applies
length and complexity requirements equally to all functions whether
they act as privacy scopes, namespaces, classes or just regular old
functions.

Static analysis tools are only worthwhile if their recommendations add
enough value to offset the cost of slogging through them -- in other
words, if the signal to noise ratio is high enough. CodeClimate hasn't
carried its own weight for a long time, and it's only gotten worse with
each recent update.

.codeclimate.yml

@@ -1,17 +0,0 @@
-languages:
-  JavaScript: true
-ratings:
-  paths:
-  - "src/**/*.js"
-exclude_paths:
-- "spec/**/*.js"
-- "lib/**"
-- "dist/*"
-- "grunt/**"
-- "images/*"
-- "**/*.md"
-- "**/*.yml"
-- "**/*.json"
-- "**/*.scss"
-- "**/*.erb"
-- "*.sh"

README.md

@@ -1,7 +1,6 @@
 <a name="README">[<img src="https://rawgithub.com/jasmine/jasmine/master/images/jasmine-horizontal.svg" width="400px" />](http://jasmine.github.io)</a>
 
 [![Build Status](https://travis-ci.org/jasmine/jasmine.svg?branch=master)](https://travis-ci.org/jasmine/jasmine)
-[![Code Climate](https://codeclimate.com/github/jasmine/jasmine.svg)](https://codeclimate.com/github/jasmine/jasmine)
 
 =======