IVGCVSW-3125 Deprecate CreateMergerDescriptorForConcatenation function

!armnn:1182

Change-Id: I8687e33c51593810eef45a4de7d5b856bcab4e3b
Signed-off-by: Jim Flynn <jim.flynn@arm.com>
diff --git a/1.0/HalPolicy.cpp b/1.0/HalPolicy.cpp
index 121379a..17d3d3e 100644
--- a/1.0/HalPolicy.cpp
+++ b/1.0/HalPolicy.cpp
@@ -273,8 +273,7 @@
         // The merger descriptor is always created across the only supported concat dimension
         // which is 0, 1 or 3 for a 4-D tensor, or 0 or 2 for a 3-D tensor.
         mergerDescriptor =
-            armnn::CreateMergerDescriptorForConcatenation(
-                inputShapes.begin(), inputShapes.end(), concatDim);
+            armnn::CreateDescriptorForConcatenation(inputShapes.begin(), inputShapes.end(), concatDim);
     }
     catch (const armnn::Exception& error)
     {