docs: zfs: remove template section

docs/chapters/zfs-support.rst

@@ -85,8 +85,8 @@ and being able to fully manage it from within the jail.
 
 To add a dataset to a jail, we can run
 ``bastille zfs TARGET jail pool/dataset /path/inside/jail``.
-This will mount ``pool/dataset`` into the jail at ``/path/inside/jail`` when the
-jail is started, and unmount and unjail it when the jail is stopped.
+This will assign ``pool/dataset`` to the jail and mount it
+at ``/path/inside/jail``.
 
 You can manually change the path where the dataset will be mounted by
 ``bastille edit TARGET zfs.conf`` and adjusting the path after you have added it,
@@ -105,34 +105,5 @@ simple.
 To remove a dataset from being jailed, we can run
 ``bastille zfs TARGET unjail pool/dataset``.
 
-Template Approach
-^^^^^^^^^^^^^^^^^
-
-While it is possible to "jail" a dataset using a template, it is a bit more
-"hacky" than the above apporach.
-Below is a template that you can use that will add the necessary bits to the
-``jail.conf`` file to "jail" a dataset.
-
-.. code-block:: shell
-
-  ARG JAIL_NAME
-  ARG DATASET
-  ARG MOUNT
-
-  CONFIG set allow.mount
-  CONFIG set allow.mount.devfs
-  CONFIG set allow.mount.zfs
-  CONFIG set enforce_statfs 1
-
-  CONFIG set "exec.created += '/sbin/zfs jail ${JAIL_NAME} ${DATASET}'"
-  CONFIG set "exec.start += '/sbin/zfs set mountpoint=${MOUNT} ${DATASET}'"
-
-  RESTART
-
-  CONFIG set "exec.prestop += 'jexec -l -U root ${JAIL_NAME} /sbin/zfs umount ${DATASET}'"
-  CONFIG set "exec.prestop += '/sbin/zfs unjail ${JAIL_NAME} ${DATASET}'"
-
-  RESTART
-
-This template can be applied using ``bastille template TARGET project/template --arg DATASET=zpool/dataset --arg MOUNT=/path/inside/jail``.
-We do not need the ``JAIL_NAME`` arg, as it will be auto-filled from the supplied ``TARGET`` name.
+NOTE: You must unjail any jailed datasets before attempting to destroy
+a jail.