removed obsolete method is_cancellation_requested from cpp files

Author: mikeblome

docs/parallel/concrt/codesnippet/CPP/cancellation-in-the-ppl_2.cpp

@@ -29,7 +29,7 @@ int wmain()
         while (moreToDo)
         {
             // Check for cancellation.
-            if (is_task_cancellation_requested())
+            if (token.is_canceled())
             {
                 // TODO: Perform any necessary cleanup here...
 

docs/parallel/concrt/codesnippet/CPP/how-to-create-a-task-that-completes-after-a-delay_2.cpp

@@ -26,11 +26,11 @@ bool count_primes(unsigned int max_value, unsigned int timeout)
         {
             // Respond if the overall task is cancelled by canceling 
             // the current task.
-            if (is_task_cancellation_requested())
+            if (cts.get_token().is_canceled())
             {
                 cancel_current_task();
             }
-            // NOTE: You can replace the calls to is_task_cancellation_requested
+            // NOTE: You can replace the calls to is_canceled
             // and cancel_current_task with a call to interruption_point.
             // interruption_point();
 

docs/parallel/concrt/codesnippet/CPP/how-to-create-a-task-that-completes-after-a-delay_3.cpp

@@ -98,11 +98,11 @@ bool count_primes(unsigned int max_value, unsigned int timeout)
         {
             // Respond if the overall task is cancelled by canceling 
             // the current task.
-            if (is_task_cancellation_requested())
+            if (cts.get_token().is_canceled())
             {
                 cancel_current_task();
             }
-            // NOTE: You can replace the calls to is_task_cancellation_requested
+            // NOTE: You can replace the calls to is_canceled
             // and cancel_current_task with a call to interruption_point.
             // interruption_point();