IVGCVSW-2467 Remove GetDataType<T> function

Change-Id: I7359617a307b9abb4c30b3d5f2364dc6d0f828f0
diff --git a/src/armnnTfParser/TfParser.cpp b/src/armnnTfParser/TfParser.cpp
index 0087ef8..15a91d5 100755
--- a/src/armnnTfParser/TfParser.cpp
+++ b/src/armnnTfParser/TfParser.cpp
@@ -866,7 +866,7 @@
         m_Storage(tensorData, tensorData + tensorInfo.GetNumElements()),
         m_TensorInfo(tensorInfo)
     {
-        BOOST_ASSERT(tensorInfo.GetDataType() == GetDataType<T>());
+        BOOST_ASSERT(GetDataTypeSize(tensorInfo.GetDataType()) == sizeof(T));
     }
 
     void CreateLayerDeferred() override