diff --git a/gulp/util/karma.conf.js b/gulp/util/karma.conf.js
deleted file mode 100644
index 8ffd74e..0000000
--- a/gulp/util/karma.conf.js
+++ /dev/null
@@ -1,87 +0,0 @@
-var path = require('path');
-
-module.exports = function(config) {
-    config.set({
-        // base path, that will be used to resolve files and exclude
-        basePath: path.join(__dirname, '..', '..'),
-
-        frameworks: ['browserify', 'mocha', 'chai'],
-
-        // list of files / patterns to load in the browser
-        files: [
-            'bin/pixi.js',
-            'test/lib/**/*.js',
-            'test/unit/{bin,src}/**/*.js',
-            // 'test/functional/**/*.js',
-            {
-                pattern: 'test/**/*.png',
-                watched: false,
-                included: false,
-                served: true
-            }
-        ],
-
-        // list of files to exclude
-        //exclude: [],
-
-        // use spec reporter
-        // possible values: 'dots', 'progress', 'junit', 'teamcity'
-        // CLI --reporters progress
-        reporters: ['spec'],
-
-        // web server port
-        // CLI --port 9876
-        port: 9876,
-
-        // cli runner port
-        // CLI --runner-port 9100
-        runnerPort: 9100,
-
-        // enable / disable colors in the output (reporters and logs)
-        // CLI --colors --no-colors
-        colors: true,
-
-        // level of logging
-        // possible values: karma.LOG_DISABLE || karma.LOG_ERROR || karma.LOG_WARN || karma.LOG_INFO || karma.LOG_DEBUG
-        // CLI --log-level debug
-        logLevel: config.LOG_INFO,
-
-        // enable / disable watching file and executing tests whenever any file changes
-        // CLI --auto-watch --no-auto-watch
-        autoWatch: false,
-
-        // Start these browsers, currently available:
-        // - Chrome
-        // - ChromeCanary
-        // - Firefox
-        // - Opera
-        // - Safari (only Mac)
-        // - PhantomJS
-        // - IE (only Windows)
-        // CLI --browsers Chrome,Firefox,Safari
-        browsers: ['Firefox'],
-
-        // If browser does not capture in given timeout [ms], kill it
-        // CLI --capture-timeout 60000
-        captureTimeout: 60000,
-
-        // report which specs are slower than 500ms
-        // CLI --report-slower-than 500
-        reportSlowerThan: 500,
-
-        preprocessors : {
-            'test/unit/{bin,src}/**/*.js': ['browserify']
-        },
-
-        // browserify configuration
-        browserify: {
-            debug: true,
-            transform: ['brfs'],
-            configure: function(bundle) {
-                bundle.on('prebundle', function() {
-                    bundle.external('pixi.js');
-                });
-            }
-        }
-    });
-};