Merged PR 229897: Remove karma-coverage dependency

Remove karma-coverage dependency because it causes build pipeline to fail and doesn't add enough value.

![ss.png](https://powerbi.visualstudio.com/4c7b5adb-c2d0-4f18-b23c-edc4ac30f4e1/_apis/git/repositories/1dd63332-e003-46a3-ac6f-70213a1bcc2e/pullRequests/229897/attachments/ss.png)

karma.conf.js

@@ -23,7 +23,7 @@ module.exports = function (config) {
       { pattern: './test/**/*.html', served: true, included: false }
     ],
     exclude: [],
-    reporters: argv.chrome ? ['coverage', 'kjhtml'] : ['spec', 'coverage', 'junit'],
+    reporters: argv.chrome ? ['kjhtml'] : ['spec', 'junit'],
     autoWatch: true,
     browsers: [browserName],
     browserNoActivityTimeout: 300000,
@@ -33,7 +33,6 @@ module.exports = function (config) {
       'karma-jasmine',
       'karma-spec-reporter',
       'karma-phantomjs-launcher',
-      'karma-coverage',
       'karma-jasmine-html-reporter',
       'karma-junit-reporter'
     ],
@@ -43,13 +42,6 @@ module.exports = function (config) {
         flags: flags.concat("--no-sandbox", "--window-size=800,800"),
       },
     },
-    preprocessors: { './tmp/**/*.js': ['coverage'] },
-    coverageReporter: {
-      reporters: [
-        { type: 'html' },
-        { type: 'text-summary' }
-      ]
-    },
     junitReporter: {
       outputDir: 'tmp',
       outputFile: 'testresults.xml',

package.json

@@ -64,7 +64,6 @@
     "json-loader": "^0.5.4",
     "karma": "6.3.5",
     "karma-chrome-launcher": "^3.1.0",
-    "karma-coverage": "^2.0.3",
     "karma-firefox-launcher": "^1.2.0",
     "karma-jasmine": "4.0.1",
     "karma-jasmine-html-reporter": "1.7.0",