COMPMID-1451 (Nightly) L2Normalization sigkill

NHWC reduction on 0 axis requires a lot of memory. Testing only
axis 1 and 2 for now.

Change-Id: I82e16a27b6dfc6b426e6294cde63c3d88cb41a09
diff --git a/tests/validation/CL/L2NormalizeLayer.cpp b/tests/validation/CL/L2NormalizeLayer.cpp
index 1cdba51..13a33a8 100644
--- a/tests/validation/CL/L2NormalizeLayer.cpp
+++ b/tests/validation/CL/L2NormalizeLayer.cpp
@@ -47,7 +47,7 @@
 constexpr AbsoluteTolerance<float> tolerance_f16(0.2f);
 
 auto data = concat(combine(framework::dataset::make("DataLayout", { DataLayout::NCHW }), framework::dataset::make("Axis", { 0, 1, 2 })), combine(framework::dataset::make("DataLayout", { DataLayout::NHWC }),
-                   framework::dataset::make("Axis", { 0, 1 })));
+                   framework::dataset::make("Axis", { 1, 2 })));
 
 } // namespace