refactor: remove an unused dependency

Author: pine

karma.conf.js

@@ -15,7 +15,7 @@ module.exports = function(config) {
     },
 
     frameworks: ['mocha'],
-    reporters: ['mocha', 'saucelabs'],
+    reporters: ['mocha'],
 
     port: 9876,
     colors: true,

package.json

@@ -25,7 +25,6 @@
     "karma-chrome-launcher": "^3.1.0",
     "karma-mocha": "^1.1.1",
     "karma-mocha-reporter": "^2.0.4",
-    "karma-sauce-launcher": "^1.2.0",
     "karma-sourcemap-loader": "^0.3.7",
     "karma-webpack": "4.0.0-rc.3",
     "mocha": "^6.0.0",