Merge branch 'jivl-fix-karma-config-file' into 'master'

fix karma config file

See merge request gitlab-org/gitlab-ce!15263

config/karma.config.js

@@ -67,14 +67,5 @@ module.exports = function(config) {
     karmaConfig.customLaunchers.ChromeHeadlessCustom.flags.push('--enable-logging', '--v=1');
   }
 
-  if (process.env.DEBUG) {
-    karmaConfig.logLevel = config.LOG_DEBUG;
-    process.env.CHROME_LOG_FILE = process.env.CHROME_LOG_FILE || 'chrome_debug.log';
-  }
-
-  if (process.env.CHROME_LOG_FILE) {
-    karmaConfig.customLaunchers.ChromeHeadlessCustom.flags.push('--enable-logging', '--v=1');
-  }
-
   config.set(karmaConfig);
 };