IVGCVSW-5299 Remove some boost::numeric_cast from armnn/tests

 * Replaced with armnn/utility/NumericCast.hpp
 * Removed combinations without float implementation in NumericCast.hpp

Signed-off-by: Matthew Sloyan <matthew.sloyan@arm.com>
Change-Id: Ia4ec605f063cdb0071fff302ef48c610f9f9505e
diff --git a/tests/InferenceModel.hpp b/tests/InferenceModel.hpp
index 8ac44f9..527cc64 100644
--- a/tests/InferenceModel.hpp
+++ b/tests/InferenceModel.hpp
@@ -10,6 +10,7 @@
 #include <armnn/utility/Timer.hpp>
 #include <armnn/BackendRegistry.hpp>
 #include <armnn/utility/Assert.hpp>
+#include <armnn/utility/NumericCast.hpp>
 
 #if defined(ARMNN_SERIALIZER)
 #include "armnnDeserializer/IDeserializer.hpp"
@@ -204,7 +205,7 @@
             network = parser->CreateNetworkFromBinary(file);
         }
 
-        unsigned int subgraphId = boost::numeric_cast<unsigned int>(params.m_SubgraphId);
+        unsigned int subgraphId = armnn::numeric_cast<unsigned int>(params.m_SubgraphId);
 
         for (const std::string& inputLayerName : params.m_InputBindings)
         {
@@ -487,10 +488,10 @@
 
             boost::apply_visitor([expectedOutputDataSize, i](auto&& value)
             {
-                const unsigned int actualOutputDataSize   = boost::numeric_cast<unsigned int>(value.size());
+                const unsigned int actualOutputDataSize   = armnn::numeric_cast<unsigned int>(value.size());
                 if (actualOutputDataSize < expectedOutputDataSize)
                 {
-                    unsigned int outputIndex = boost::numeric_cast<unsigned int>(i);
+                    unsigned int outputIndex = i;
                     throw armnn::Exception(
                             fmt::format("Not enough data for output #{0}: expected "
                             "{1} elements, got {2}", outputIndex, expectedOutputDataSize, actualOutputDataSize));