remove unused entries from karma config

Author: filipesilva

packages/@angular/cli/blueprints/ng/files/karma.conf.js

@@ -15,25 +15,14 @@ module.exports = function (config) {
     client:{
       clearContext: false // leave Jasmine Spec Runner output visible in browser
     },
-    files: [
-      { pattern: './<%= sourceDir %>/test.ts', watched: false }
-    ],
-    preprocessors: {
-      './<%= sourceDir %>/test.ts': ['@angular/cli']
-    },
-    mime: {
-      'text/x-typescript': ['ts','tsx']
-    },
     coverageIstanbulReporter: {
       reports: [ 'html', 'lcovonly' ],
       fixWebpackSourcePaths: true
     },
     angularCli: {
       environment: 'dev'
     },
-    reporters: config.angularCli && config.angularCli.codeCoverage
-              ? ['progress', 'coverage-istanbul']
-              : ['progress', 'kjhtml'],
+    reporters: ['progress', 'kjhtml'],
     port: 9876,
     colors: true,
     logLevel: config.LOG_INFO,