Remove (NE/CL)YoloLayer support

YOLO layer is too specialized and specific to a single model type. Can
be decomposed using split, activation and concatenate layers

Partially Resolves: COMPMID-3996

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: I3cde88f8d4cc7d8c70ce1bb3b32b00f8d09bdca2
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4678
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
diff --git a/src/graph/nodes/SliceLayerNode.cpp b/src/graph/nodes/SliceLayerNode.cpp
index 3bd6752..b7655b9 100644
--- a/src/graph/nodes/SliceLayerNode.cpp
+++ b/src/graph/nodes/SliceLayerNode.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018 Arm Limited.
+ * Copyright (c) 2018-2020 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -32,7 +32,7 @@
 {
 namespace graph
 {
-SliceLayerNode::SliceLayerNode(Coordinates &starts, Coordinates &ends)
+SliceLayerNode::SliceLayerNode(const Coordinates &starts, const Coordinates &ends)
     : _starts(starts), _ends(ends)
 {
     _input_edges.resize(1, EmptyEdgeID);