Update issue template removing not applicable checklist items

[dikhan]

Describe the bug

As per #179 labels and projects are not public for creators of issues, hence the issue templates for bugs and feature requests checklist is not actionable. Links to the issue template checklist below for the ref:

• https://github.com/dikhan/terraform-provider-openapi/blob/master/.github/ISSUE_TEMPLATE/bug_report.md#checklist
• https://github.com/dikhan/terraform-provider-openapi/blob/master/.github/ISSUE_TEMPLATE/feature_request.md#checklist

To Reproduce

A clear and concise description on how does it work now and what's the current behaviour.

Steps to reproduce the behavior:

1. As a community contributor, I create a new issue via github in this repo
2. I can't update the labels/project as they are not public

Expected behaviour

This is intended to be controlled by the repo collaborators to keep labeling under control and also be able to validate issues before adding them to the project, however the checklist should be updated to not ask the contributor to update those details.

Additional context

Add any other context about the problem here.

Checklist

Don't forget to go through the checklist to make sure the issue is created properly:

• I have added a corresponding label (feature request/bug/etc) to the issue (right side menu)
• I have added this issue to the 'API Terraform Provider' GitHub project (right side menu)

[dikhan]

closing this as the checklist serves as reminder for the repo maintainers to provide that extra info