Drop styles from qunit tests -- this should never have been required.

Two tests will fail, but I'll fix them.

client/tests/karma/karma.config.qunit.js

@@ -13,8 +13,6 @@ const baseKarmaConfig = require("./karma.config.base");
 
 const testFiles = ["../node_modules/@babel/polyfill/dist/polyfill.js", "../tests/qunit/test.js"];
 
-const assets = ["../tests/qunit/assets/*.css"];
-
 const preprocessors = testFiles.reduce((result, path) => {
     result[path] = ["webpack"];
     return result;
@@ -24,7 +22,7 @@ module.exports = function (config) {
     const baseConfig = baseKarmaConfig(config);
 
     const settings = Object.assign({}, baseConfig, {
-        files: testFiles.concat(assets),
+        files: testFiles,
         preprocessors: preprocessors,
         frameworks: ["polyfill", "qunit"],
         singleRun: true,

client/tests/qunit/test-app.js

@@ -11,7 +11,6 @@ import { setGalaxyInstance } from "app";
 import { getAppRoot } from "onload";
 import galaxyOptions from "./test-data/bootstrapped";
 import serverdata from "./test-data/fakeserver";
-import "./assets/base.css";
 
 export function setupTestGalaxy(galaxyOptions_ = null) {
     galaxyOptions_ = galaxyOptions_ || galaxyOptions;