Fix '#if defined(ARMNN_POST_TFLITE_2_3)' in TfLiteParser Conv3D test.

Signed-off-by: Cathal Corbett <cathal.corbett@arm.com>
Change-Id: I5c68b81a67fc2b5a33cf62753351440564bb868e
diff --git a/src/armnnTfLiteParser/TfLiteParser.hpp b/src/armnnTfLiteParser/TfLiteParser.hpp
index e742d30..49744a0 100644
--- a/src/armnnTfLiteParser/TfLiteParser.hpp
+++ b/src/armnnTfLiteParser/TfLiteParser.hpp
@@ -120,7 +120,7 @@
     void ParseConcatenation(size_t subgraphIndex, size_t operatorIndex);
     void ParseConv2D(size_t subgraphIndex, size_t operatorIndex);
     // Conv3D support was added in TF 2.5, so for backwards compatibility a hash define is needed.
-    #if defined(ARMNN_POST_TFLITE_2_3)
+    #if defined(ARMNN_POST_TFLITE_2_4)
     void ParseConv3D(size_t subgraphIndex, size_t operatorIndex);
     #endif
     void ParseDepthToSpace(size_t subgraphIndex, size_t operatorIndex);