[core] fixing karma timeout error in travis (vmware-archive#666)

Fixes vmware-archive#666.

Signed-off-by: Jeeyun Lim <jeeyun.lim@gmail.com>

build/karma.conf.js

@@ -10,40 +10,6 @@ module.exports = function (config) {
     var dist = "dist/";
     var src = "src/";
 
-    // Browsers to run on Sauce Labs
-    var customLaunchers = {
-        'SL_Chrome_Win_10': {
-            base: 'SauceLabs',
-            browserName: 'chrome',
-            version: 57,
-            platform: 'Windows 10'
-        },
-        'SL_IE_11': {
-            base: 'SauceLabs',
-            browserName: 'internet explorer',
-            version: '11',
-            platform: 'Windows 7'
-        },
-        'SL_IE_Edge_13': {
-            base: 'SauceLabs',
-            browserName: 'MicrosoftEdge',
-            version: '13',
-            platform: 'Windows 10'
-        },
-        'SL_IE_Edge_14': {
-            base: 'SauceLabs',
-            browserName: 'MicrosoftEdge',
-            version: '14',
-            platform: 'Windows 10'
-        },
-        'SL_FireFox_51_Win_10': {
-            base: 'SauceLabs',
-            browserName: 'firefox',
-            version: 51,
-            platform: 'Windows 10'
-        }
-    };
-
     var configuration = {
         basePath: '../',
 
@@ -117,28 +83,14 @@ module.exports = function (config) {
         logLevel: config.LOG_INFO,
         autoWatch: false,
         browsers: ['PhantomJS'],
-        singleRun: true,
+        singleRun: false,
         browserNoActivityTimeout: 100000,
-        captureTimeout: 120000,
-
-        // Sauce Labs configurations
-        customLaunchers: customLaunchers,
-
-        sauceLabs: {
-            testName: 'Clarity Unit Tests',
-            public: "public",
-            build: process.env.TRAVIS_JOB_NUMBER,
-            tunnelIdentifier: process.env.TRAVIS_JOB_NUMBER,
-            username: process.env.SAUCE_USERNAME,
-            accessKey: process.env.SAUCE_ACCESS_KEY,
-            startConnect: false
-        }
+        captureTimeout: 120000
     }
 
-    // Only enable Sauce Labs for Travis CI
+    // Only use Chrome for Travis CI
     if(process.env.TRAVIS && process.env.TEST_SUITE === "test") {
-        configuration.browsers = Object.keys(customLaunchers);
-        configuration.reporters = ['mocha', 'saucelabs'];
+        configuration.browsers = ['Chrome'];
     }
 
     config.set(configuration);