Removing unnecessary schema dependency from delegate unit tests.

* All of the unit tests were including the TfL schema even though it
is not used. This prevented building with delegate and not TfL parser.
* Fixing some template compile errors that were introduced when
FileComparisonExecutorTests.cpp was compiled without TfL parser.

Signed-off-by: Colm Donelan <colm.donelan@arm.com>
Change-Id: I86742d57a6520ab6bd8336a683fee29de326fff5
diff --git a/delegate/test/LstmTest.cpp b/delegate/test/LstmTest.cpp
index 1034a01..87b87be 100644
--- a/delegate/test/LstmTest.cpp
+++ b/delegate/test/LstmTest.cpp
@@ -8,7 +8,7 @@
 #include <armnn_delegate.hpp>
 
 #include <flatbuffers/flatbuffers.h>
-#include <schema_generated.h>
+
 #include <doctest/doctest.h>
 
 namespace armnnDelegate