IVGCVSW-4485 Remove Boost assert

 * Change boost assert to armnn assert
 * Change include file to armnn assert
 * Fix ARMNN_ASSERT_MSG issue with multiple conditions
 * Change BOOST_ASSERT to BOOST_TEST where appropriate
 * Remove unused include statements

Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: I5d0fa3a37b7c1c921216de68f0073aa34702c9ff
diff --git a/src/backends/reference/workloads/Decoders.hpp b/src/backends/reference/workloads/Decoders.hpp
index 3434ccb..deb3b1f 100644
--- a/src/backends/reference/workloads/Decoders.hpp
+++ b/src/backends/reference/workloads/Decoders.hpp
@@ -10,7 +10,7 @@
 #include <armnnUtils/FloatingPointConverter.hpp>
 #include <armnnUtils/TensorUtils.hpp>
 
-#include <boost/assert.hpp>
+#include <armnn/utility/Assert.hpp>
 
 namespace armnn
 {
@@ -142,7 +142,7 @@
         }
         default:
         {
-            BOOST_ASSERT_MSG(false, "Unsupported Data Type!");
+            ARMNN_ASSERT_MSG(false, "Unsupported Data Type!");
             break;
         }
     }