IVGCVSW-6847 replace armnn:Optional with arm::pipe::Optional in profiling code

Change-Id: I048c538d4f8c21770aec2b2751c934d9fa15a4dc
Signed-off-by: Jim Flynn <jim.flynn@arm.com>
diff --git a/src/profiling/test/SendCounterPacketTests.cpp b/src/profiling/test/SendCounterPacketTests.cpp
index abd4cee..bdc1d51 100644
--- a/src/profiling/test/SendCounterPacketTests.cpp
+++ b/src/profiling/test/SendCounterPacketTests.cpp
@@ -1251,7 +1251,7 @@
                                                               "counter2",
                                                               "counter2description",
                                                               std::string("counter2units"),
-                                                              armnn::EmptyOptional(),
+                                                              arm::pipe::EmptyOptional(),
                                                               device2->m_Uid,
                                                               0));
     CHECK(counterDirectory.GetCounterCount() == 5);
@@ -1267,7 +1267,7 @@
                                                               0.0000045399f,
                                                               "counter3",
                                                               "counter3description",
-                                                              armnn::EmptyOptional(),
+                                                              arm::pipe::EmptyOptional(),
                                                               numberOfCores,
                                                               device2->m_Uid,
                                                               counterSet1->m_Uid));