Remove backward compatibility tests and workflow

Author: mugdha-adhav

.github/workflows/backward-compatibility.yaml

@@ -38,7 +38,6 @@ unit-tests:
 
 .PHONY: integration
 integration:
-	./test/integration/test-backward-compatability.sh
 	./test/integration/test-restart-ds-containerd.sh
 	./test/integration/test-restart-ds-crio.sh
 	./test/integration/test-restart-runtime-containerd.sh

Makefile

@@ -9,7 +9,6 @@ There are a few [GitHub Workflows](https://docs.github.com/en/actions/using-work
 
 ## Tests
 
-- [![backward-compatibility-5mins](https://github.com/warm-metal/container-image-csi-driver/actions/workflows/backward-compatibility.yaml/badge.svg)](https://github.com/warm-metal/container-image-csi-driver/actions/workflows/backward-compatibility.yaml)
 - [![containerd-11mins](https://github.com/warm-metal/container-image-csi-driver/actions/workflows/containerd.yaml/badge.svg)](https://github.com/warm-metal/container-image-csi-driver/actions/workflows/containerd.yaml)
 - [![cri-o-10mins](https://github.com/warm-metal/container-image-csi-driver/actions/workflows/cri-o.yaml/badge.svg)](https://github.com/warm-metal/container-image-csi-driver/actions/workflows/cri-o.yaml)
 - [![restart-ds-containerd-5mins](https://github.com/warm-metal/container-image-csi-driver/actions/workflows/restart-ds-containerd.yaml/badge.svg)](https://github.com/warm-metal/container-image-csi-driver/actions/workflows/restart-ds-containerd.yaml)

docs/automation.md

@@ -389,7 +389,6 @@ kubectl apply -f sample/install/
 - ✅ Sanity tests (CSI spec compliance)
 - ✅ End-to-end tests
 - ✅ Integration tests (containerd, CRI-O)
-- ✅ Backward compatibility tests
 - ✅ Driver restart tests
 - ✅ Runtime restart tests
 - ✅ Metrics validation tests