delete: Delete unused templates

include/i18n/en_US/help/tips/staff.edit_staff_account_form.yaml

-#
-# This is popup help messages for the Admin Panel -> Staff -> Edit Staff Account Form
-#
-# Fields:
-# title - Shown in bold at the top of the popover window
-# content - The body of the help popover
-# links - List of links shows below the content
-#   title - Link title
-#   href - href of link (links starting with / are translated to the
-#       helpdesk installation path)
-#
-# The key names such as 'helpdesk_name' should not be translated as they
-# must match the HTML #ids put into the page template.
-#
----
-update_staff:
-    title: Update Staff
-    content: >
-        This form is accessed by clicking the Username of an agent in the Agent
-        (Staff) Members Table (To get here, see Admin Panel -> Staff -> Staff
-        Members).
-
-assigned_teams:
-    title: Assigned Teams
-    content: >
-        Assign agent to as many teams as necessary.
-

include/i18n/en_US/help/tips/tickets.new_ticket.yaml

-#
-# This is popup help messages for the Staff Panel -> Tickets -> New Ticket
-#
-# Fields:
-# title - Shown in bold at the top of the popover window
-# content - The body of the help popover
-# links - List of links shows below the content
-#   title - Link title
-#   href - href of link (links starting with / are translated to the
-#       helpdesk installation path)
-#
-# The key names such as 'helpdesk_name' should not be translated as they
-# must match the HTML #ids put into the page template.
-#
----
-new_ticket:
-    title: New Ticket
-    content: >
-
-user_information:
-    title: User Information
-    content: >
-
-email_address:
-    title: Email Address
-    content: >
-
-full_name:
-    title: Full Name
-    content: >
-
-ticket_notice:
-    title: Ticket Notice
-    content: >
-
-ticket_information_options:
-    title: Ticket Information & Options
-    content: >
-
-ticket_source:
-    title: Ticket Source
-    content: >
-
-help_topic:
-    title: Help Topic
-    content: >
-
-department:
-    title: Department
-    content: >
-
-sla_plan:
-    title: SLA Plan
-    content: >
-
-due_date:
-    title: Due Date
-    content: >
-
-assign_to:
-    title: Assign To
-    content: >
-
-ticket_details:
-    title: Ticket Details
-    content: >
-
-issue_summary:
-    title: Issue Summary
-    content: >
-
-issue_details:
-    title: Issue Details
-    content: >
-
-priority_level:
-    title: Priority Level
-    content: >
-
-response:
-    title: Response
-    content: >
-
-canned_response:
-    title: Canned Response
-    content: >
-        Include comments about the Append checkbox here too
-
-initial_response_for_the_ticket:
-    title: Initial Response for the Ticket
-    content: >
-
-attachments:
-    title: Attachments
-    content: >
-
-ticket_status:
-    title: Ticket Status
-    content: >
-
-signature:
-    title: Signature
-    content: >
-
-response:
-    title: Response
-    content: >
-
-internal_note:
-    title: Internal Note
-    content: >

include/i18n/en_US/help/tips/tickets.user_lookup_prompt.yaml

-#
-# This is popup help messages for the Staff Panel -> Tickets -> User Look Up (Prompt)
-#
-# Fields:
-# title - Shown in bold at the top of the popover window
-# content - The body of the help popover
-# links - List of links shows below the content
-#   title - Link title
-#   href - href of link (links starting with / are translated to the
-#       helpdesk installation path)
-#
-# The key names such as 'helpdesk_name' should not be translated as they
-# must match the HTML #ids put into the page template.
-#
----
-search_by_email_phone_or_name:
-    title: Search by email, phone or name
-    content: >
-
-create_new_user:
-    title: Create New User
-    content: >