PULL_REQUEST_TEMPLATE.md

What is the change?

Remove this line and add a description

closes: #issue_number

Before you create this PR, confirm all the requirements listed below by checking the checkboxes [x]:

I have followed the Code of Conduct.
I have checked there aren't other open Pull Requests for the same update/change.
I have you tested the code before submission.
I have commented my code, particularly in hard-to-understand areas.
My changes generates no new warnings.
I'm HSOC contributor.