Remove prior now that #1740 has been backported down to najdorf

[Fryguy]

The prior now lives in the najdorf backport commit eca1a4b4

@bdunne Please review.

[miq-bot]

Checked commit https://github.com/Fryguy/manageiq-documentation/commit/a739e2a41cf2e809fadf3f7c4202bf9b93c1b084 with ruby 2.6.10, rubocop 1.28.2, haml-lint 0.35.0, and yamllint 1 file checked, 1 offense detected

**

• [ ] :bomb: :boom: :fire: :fire_engine: - Linter/Yaml - missing config files