cleanup: remove nanokernel/nano leftovers

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
diff --git a/samples/cpp_synchronization/src/main.cpp b/samples/cpp_synchronization/src/main.cpp
index 7c1cdc4..40826d4 100644
--- a/samples/cpp_synchronization/src/main.cpp
+++ b/samples/cpp_synchronization/src/main.cpp
@@ -42,10 +42,10 @@
 
 /*
  * @class cpp_semaphore
- * @brief nano semaphore
+ * @brief Semaphore
  *
  * Class derives from the pure virtual semaphore class and
- * implements it's methods for the nanokernel semaphore
+ * implements it's methods for the semaphore
  */
 class cpp_semaphore: public semaphore {
 protected: