Remove redundant doc keys for netapp_e_ modules (#2968)

Fixes #2967

lib/ansible/modules/extras/storage/netapp/netapp_e_auth.py

@@ -26,20 +26,6 @@ description:
 version_added: "2.2"
 author: Kevin Hulquest (@hulquest)
 options:
-    api_username:
-        required: true
-        description:
-        - The username to authenticate with the SANtricity WebServices Proxy or embedded REST API.
-    api_password:
-        required: true
-        description:
-        - The password to authenticate with the SANtricity WebServices Proxy or embedded REST API.
-    api_url:
-        required: true
-        description:
-        - The url to the SANtricity WebServices Proxy or embedded REST API.
-        example:
-        - https://prod-1.wahoo.acme.com/devmgr/v2
     validate_certs:
         required: false
         default: true

lib/ansible/modules/extras/storage/netapp/netapp_e_lun_mapping.py

@@ -27,20 +27,6 @@ description:
      - Allows for the creation and removal of volume to host mappings for NetApp E-series storage arrays.
 version_added: "2.2"
 options:
-  api_username:
-      required: true
-      description:
-      - The username to authenticate with the SANtricity WebServices Proxy or embedded REST API.
-  api_password:
-      required: true
-      description:
-      - The password to authenticate with the SANtricity WebServices Proxy or embedded REST API.
-  api_url:
-      required: true
-      description:
-      - The url to the SANtricity WebServices Proxy or embedded REST API.
-      example:
-      - https://prod-1.wahoo.acme.com/devmgr/v2
   validate_certs:
       required: false
       default: true