IVGCVSW-7854 Remove/rewrite asserts in the backends.

* Identify usages of ARMNN_ASSERT that should be proper exceptions.
* Change ARMNN_ASSERT in Doctests to CHECK.
* Verify any remaining assertions are reasonable.

Signed-off-by: Colm Donelan <colm.donelan@arm.com>
Change-Id: Ifd1f2a5a4bb60135e8654305035ec70e09c4dc2d
diff --git a/src/backends/neon/workloads/NeonConvolution3dWorkload.cpp b/src/backends/neon/workloads/NeonConvolution3dWorkload.cpp
index 5bf6e10..ef03dde 100644
--- a/src/backends/neon/workloads/NeonConvolution3dWorkload.cpp
+++ b/src/backends/neon/workloads/NeonConvolution3dWorkload.cpp
@@ -1,5 +1,5 @@
 //
-// Copyright © 2021-2023 Arm Ltd and Contributors. All rights reserved.
+// Copyright © 2021-2024 Arm Ltd and Contributors. All rights reserved.
 // SPDX-License-Identifier: MIT
 //
 
@@ -105,9 +105,6 @@
                                          this->GetGuid());
 
     m_ConvolutionLayer.reset(convolutionLayer.release());
-
-    ARMNN_ASSERT(m_ConvolutionLayer);
-
     m_ConvolutionLayer->prepare();
 }