chore: delete unused ucind-image-push target in Makefile

Author: psviderski

Makefile

@@ -57,10 +57,6 @@ corrosion-multiarch-image-push:
 ucind-image:
 	docker build -t "$(UCIND_IMAGE)" --target ucind .
 
-.PHONY: ucind-image-push
-ucind-image-push: ucind-image
-	docker push "$(UCIND_IMAGE)"
-
 .PHONY: ucind-multiarch-image-push
 ucind-multiarch-image-push:
 	docker buildx build --push --platform linux/amd64,linux/arm64 -t "$(UCIND_IMAGE)" --target ucind .