Merge pull request containers#12623 from giuseppe/revert-old-PR-template

[CI:DOCS] .github: revert to the old template

.github/PULL_REQUEST_TEMPLATE.md

@@ -9,33 +9,3 @@ Finally, be sure to sign commits with your real name.  Since by opening
 a PR you already have commits, you can add signatures if needed with
 something like `git commit -s --amend`.
 -->
-
-#### What this PR does / why we need it:
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-<!---
-Please put your overall PR description here
--->
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-#### How to verify it
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-<!---
-Please specify the precise conditions and/or the specific test(s) which must pass.
--->
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-#### Which issue(s) this PR fixes:
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-<!--
-Please uncomment this block and include only one of the following on a
-line by itself:
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-None
-
--OR-
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-Fixes #<issue number>
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-*** Please also put 'Fixes #' in the commit and PR description***
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--->
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-#### Special notes for your reviewer: