Example Partition: Remove the timer comment

The timer code has been removed, so remove the comment as well.

Signed-off-by: Kevin Peng <kevin.peng@arm.com>
Change-Id: I5443a8f6a6b8f9db825549f336999e96877fdb9a
diff --git a/examples/example_partition/tfm_example_partition.c b/examples/example_partition/tfm_example_partition.c
index d9c9cf3..1539d81 100644
--- a/examples/example_partition/tfm_example_partition.c
+++ b/examples/example_partition/tfm_example_partition.c
@@ -13,7 +13,7 @@
 
 /**
  * \brief An example service implementation that prints out an argument from the
- *        client and then starts a timer.
+ *        client.
  */
 psa_status_t tfm_example_service_sfn(const psa_msg_t *msg)
 {