Updated version-branch tests.

After refactor to eliminate the clientglobalcontext.d.ts file, the tests
needed an update to their reference headers.

xrm/xrm-6.tests.ts

@@ -1,5 +1,4 @@
 /// <reference path="xrm-6.d.ts" />
-/// <reference path="clientglobalcontext.d.ts" />
 
 function _getContext()
 {

xrm/xrm-7.0.tests.ts

@@ -1,5 +1,4 @@
 /// <reference path="xrm-7.0.d.ts" />
-/// <reference path="clientglobalcontext.d.ts" />
 
 function _getContext()
 {