Remove unused file

test/test-main.js

@@ -1,22 +0,0 @@
-var tests = []
-for (var file in window.__karma__.files) {
-  if (window.__karma__.files.hasOwnProperty(file)) {
-    if (/spec\.js$/.test(file)) {
-      var file2 = file.substr(10, file.length - 13)
-      console.log('Testing with: ' + file2)
-
-      tests.push(file2)
-    }
-  }
-}
-
-require.config({
-  // Karma serves files from '/base'
-  baseUrl: '/base/src',
-
-  // ask Require.js to load these files (all our tests)
-  deps: tests,
-
-  // start test run, once Require.js is done
-  callback: window.__karma__.start
-})

todo.md

@@ -1,5 +1,6 @@
 - Upgrade d3 to version 4
 - Use external d3-textwrap library
+    - rewrite src/d3.js
     - Problem is it's for d3 v4 only
 - Make node console output colors like Chrome console
 - What's the correct way to change logLevel as an end user?
@@ -13,11 +14,8 @@
     - https://github.com/lodash/babel-plugin-lodash
     - https://www.npmjs.com/package/lodash-webpack-plugin
 - Replace var with const/let
-- Replace require with import
-- Replace module.exports with export default
 - Replace karma-webpack with karma-babel
 - Stops working for mermaid-live-editor since 7.0.9
 - global.mermaid_config
 - rewrite logger
-- rewrite src/d3.js
 - rewrite less code