remove: unused entry point files

src/lib.ts

@@ -1,5 +0,0 @@
-import { VERSION_INFO } from './version.js';
-
-export {
-  VERSION_INFO,
-};

test/harness.ts

@@ -1,22 +0,0 @@
-import chai from 'chai';
-import chaiAsPromised from 'chai-as-promised';
-import sinonChai from 'sinon-chai';
-import sourceMapSupport from 'source-map-support';
-
-sourceMapSupport.install({
-  environment: 'node',
-  handleUncaughtExceptions: true,
-  hookRequire: true,
-});
-
-/**
- * This will break the whole test run if any test leaks an unhandled rejection.
- */
-process.on('unhandledRejection', (reason, promise) => {
-  // eslint-disable-next-line no-console
-  console.error('unhandled error during tests', reason);
-  process.exit(1);
-});
-
-chai.use(chaiAsPromised);
-chai.use(sinonChai);