Delete lifecycle policy API
Deletes a lifecycle policy.
DELETE _ilm/policy/<policy_id>
Deletes the specified lifecycle policy definition. You cannot delete policies
that are currently in use. If the policy is being used to manage any indices,
the request fails and returns an error.
- 
policy(required)
- 
  (string) Identifier for the policy.
- 
timeout
- 
  (time units) Specifies the period of time to wait for a response. If no
  response is received before the timeout expires, the request fails and
  returns an error. Defaults to 30s. For more information about
  time units, see Time units.
- 
master_timeout
- 
  (time units) Specifies the period of time to wait for a connection to the
  master node. If no response is received before the timeout expires, the request
  fails and returns an error. Defaults to 30s. For more information about
  time units, see Time units.
You must have the manage_ilm cluster privilege to use this API.
For more information, see Security Privileges.
The following example deletes my_policy:
DELETE _ilm/policy/my_policy
When the policy is successfully deleted, you receive the following result: