Revert "[MaintenanceService] Added Support for InGuestPatch maintenance scope. (#15827)

[wyunchi-ms]

(#15827 ) updated the SDK to 1.4.0-preview. But server side doesn't support list operation anymore. This will cause breaking change.

{
  "error": {
    "code": "InvalidResourceType",
    "message": "The resource type 'maintenanceConfigurations' could not be found in the namespace 'Microsoft.Maintenance' for api version '2021-09-01-preview'. The supported api-versions are '2016-01-01,2017-01-01,2017-04-26,2018-06-01-preview,2018-10-01,2020-04-01,2020-07-01-preview,2021-04-01-preview,2021-05-01'."
  }
}

This reverts commit 7219731.

Description

Checklist

• I have read the Submitting Changes section of CONTRIBUTING.md
• The title of the PR is clear and informative
• The appropriate ChangeLog.md file(s) has been updated:
  • For any service, the ChangeLog.md file can be found at src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md
  • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header -- no new version header should be added
• The PR does not introduce breaking changes
• If applicable, the changes made in the PR have proper test coverage
• For public API changes to cmdlets:
  • a cmdlet design review was approved for the changes in this repository (Microsoft internal only)
    • {Please put the link here}
  • the markdown help files have been regenerated using the commands listed here