pkg/unittest: Removed references to expectAsync[Until]X in docs

pkg/unittest/lib/src/group_context.dart

 part of unittest;
 
-/**
- * Setup and teardown functions for a group and its parents, the latter
- * for chaining.
- */
+/// Setup and teardown functions for a group and its parents, the latter
+/// for chaining.
 class _GroupContext {
   final _GroupContext parent;
 
-  /** Description text of the current test group. */
+  /// Description text of the current test group.
   final String _name;
 
-  /** Setup function called before each test in a group. */
+  /// Setup function called before each test in a group.
   Function _testSetup;
 
   get testSetup => _testSetup;
 
   get parentSetup => (parent == null) ? null : parent.testSetup;
 
   set testSetup(Function setup) {
     var preSetup = parentSetup;
     if (preSetup == null) {
       _testSetup = setup;
     } else {
       _testSetup = () {
         var f = preSetup();
         if (f is Future) {
           return f.then((_) => setup());
         } else {
           return setup();
         }
       };
     }
   }
 
-  /** Teardown function called after each test in a group. */
+  /// Teardown function called after each test in a group.
   Function _testTeardown;
 
   get testTeardown => _testTeardown;
 
   get parentTeardown => (parent == null) ? null : parent.testTeardown;
 
   set testTeardown(Function teardown) {
     var postTeardown = parentTeardown;
     if (postTeardown == null) {
       _testTeardown = teardown;
@@ skipping 11 matching lines @@
 
   String get fullName => (parent == null || parent == _rootContext)
       ? _name
       : "${parent.fullName}$groupSep$_name";
 
   _GroupContext([this.parent, this._name = '']) {
     _testSetup = parentSetup;
     _testTeardown = parentTeardown;
   }
 }