This has not been tested thoroughly. Not recommended for use in Production and use at your own risk.
This kubectl plugin can delete a given resource from all the namespaces
sample usage
$ ./kubectl-remove-in-allns configmap my-test-config
INFO[0000] configmap "my-test-config" deleted from namespace "default"
INFO[0000] configmap "my-test-config" not found in namespace "kube-node-lease"
INFO[0000] configmap "my-test-config" not found in namespace "kube-public"
INFO[0000] configmap "my-test-config" deleted from namespace "kube-system"
INFO[0000] configmap "my-test-config" deleted from namespace "test"
supports following resources right now (PR welcome for supporting other resource types):