remove chai version constant (#1550)

* remove chai version constant

* remove version test

Author: Kristján Oddsson

lib/chai.js

@@ -15,12 +15,6 @@ import {assert} from './chai/interface/assert.js';
 
 const used = [];
 
-/*!
- * Chai version
- */
-
-export const version = '4.3.3';
-
 /*!
  * Assertion Error
  */

test/expect.js

@@ -4,10 +4,6 @@ import {globalErr as err} from './bootstrap/index.js';
 describe('expect', function () {
   var expect = chai.expect;
 
-  it('chai.version', function() {
-    expect(chai).to.have.property('version');
-  });
-
   it('assertion', function(){
     expect('test').to.be.a('string');
     expect('foo').to.equal('foo');