remove submodules

packages/splitjs/karma.conf.js

@@ -0,0 +1,8 @@
+module.exports = config => {
+    config.set({
+        frameworks: ['jasmine'],
+        browsers: ['FirefoxHeadless', 'ChromeHeadless'],
+        singleRun: true,
+        files: ['dist/split.js', 'test/split.spec.js'],
+    })
+}