Add define to skip greentea sync

Author: Oren Cohen

features/frameworks/greentea-client/source/greentea_test_env.cpp

@@ -94,8 +94,10 @@ void _GREENTEA_SETUP_COMMON(const int timeout, const char *host_test_name, char
  *           This function is blocking.
  */
 extern "C" void GREENTEA_SETUP(const int timeout, const char *host_test_name) {
+#if defined(NO_GREENTEA)
     char _value[GREENTEA_UUID_LENGTH] = {0};
     _GREENTEA_SETUP_COMMON(timeout, host_test_name, _value, GREENTEA_UUID_LENGTH);
+#endif
 }
 
 /** \brief Handshake with host and send setup data (timeout and host test name). Allows you to preserve sync UUID.