Cleaning up unit test GetProfilingGuidGenerator.

* Removing duplicate check of backendProfilingIface
* Removing BOOST_CHECK(firstGuid) which appears to cause
  problems in v7 environments.

Signed-off-by: Colm Donelan <Colm.Donelan@arm.com>
Change-Id: I0d605e9f42c6557270c12c3e33c0617e2b44ad0d
diff --git a/src/backends/backendsCommon/test/BackendProfilingTests.cpp b/src/backends/backendsCommon/test/BackendProfilingTests.cpp
index 66f99be..306c024 100644
--- a/src/backends/backendsCommon/test/BackendProfilingTests.cpp
+++ b/src/backends/backendsCommon/test/BackendProfilingTests.cpp
@@ -499,9 +499,7 @@
 
     // Get the Guid generator and check the getting two Guid's results in the second being greater than the first.
     armnn::profiling::IProfilingGuidGenerator& guidGenerator = backendProfilingIface->GetProfilingGuidGenerator();
-    BOOST_CHECK(backendProfilingIface);
     const armnn::profiling::ProfilingDynamicGuid& firstGuid = guidGenerator.NextGuid();
-    BOOST_CHECK(firstGuid);
     const armnn::profiling::ProfilingDynamicGuid& secondGuid = guidGenerator.NextGuid();
     BOOST_CHECK(secondGuid > firstGuid);