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/DeepSpeechV1Database.hpp b/tests/DeepSpeechV1Database.hpp
index fa7dda0..5e721c3 100644
--- a/tests/DeepSpeechV1Database.hpp
+++ b/tests/DeepSpeechV1Database.hpp
@@ -11,8 +11,7 @@
 #include <vector>
 
 #include <armnn/TypesUtils.hpp>
-
-#include <boost/numeric/conversion/cast.hpp>
+#include <armnn/utility/NumericCast.hpp>
 
 #include <array>
 #include <string>
@@ -80,7 +79,7 @@
     return ParseArrayImpl<uint8_t>(stream,
                                    [&quantizationScale, &quantizationOffset](const std::string & s)
                                    {
-                                       return boost::numeric_cast<uint8_t>(
+                                       return armnn::numeric_cast<uint8_t>(
                                                armnn::Quantize<uint8_t>(std::stof(s),
                                                                          quantizationScale,
                                                                          quantizationOffset));