IVGCVSW-4514 Remove lexical_cast.hpp

Signed-off-by: David Monahan <david.monahan@arm.com>
Change-Id: I992379f03d1cfe3c019bb23786458d4f22df6b17
diff --git a/src/backends/backendsCommon/test/JsonPrinterTestImpl.cpp b/src/backends/backendsCommon/test/JsonPrinterTestImpl.cpp
index 850a4d3..91ce150 100644
--- a/src/backends/backendsCommon/test/JsonPrinterTestImpl.cpp
+++ b/src/backends/backendsCommon/test/JsonPrinterTestImpl.cpp
@@ -12,7 +12,6 @@
 #include <armnn/INetwork.hpp>
 
 #include <boost/algorithm/string.hpp>
-#include <boost/lexical_cast.hpp>
 #include <boost/test/unit_test.hpp>
 
 #include <sstream>
diff --git a/tests/InferenceModel.hpp b/tests/InferenceModel.hpp
index 711f768..0529770 100644
--- a/tests/InferenceModel.hpp
+++ b/tests/InferenceModel.hpp
@@ -27,7 +27,6 @@
 #include <boost/format.hpp>
 #include <boost/program_options.hpp>
 #include <boost/filesystem.hpp>
-#include <boost/lexical_cast.hpp>
 #include <boost/variant.hpp>
 
 #include <algorithm>