Remove lolex where its not needed and move to dev-deps. Remove unused optimist

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

test/components/views/rooms/MemberList-test.js

@@ -1,7 +1,6 @@
 import React from 'react';
 import ReactTestUtils from 'react-dom/test-utils';
 import ReactDOM from 'react-dom';
-import lolex from 'lolex';
 
 import * as TestUtils from '../../../test-utils';
 
@@ -27,7 +26,6 @@ describe('MemberList', () => {
     let parentDiv = null;
     let client = null;
     let root = null;
-    let clock = null;
     let memberListRoom;
     let memberList = null;
 
@@ -40,8 +38,6 @@ describe('MemberList', () => {
         client = MatrixClientPeg.get();
         client.hasLazyLoadMembersEnabled = () => false;
 
-        clock = lolex.install();
-
         parentDiv = document.createElement('div');
         document.body.appendChild(parentDiv);
 
@@ -114,8 +110,6 @@ describe('MemberList', () => {
             parentDiv = null;
         }
 
-        clock.uninstall();
-
         done();
     });