Remove PR template

.github/pull_request_template.md

@@ -1,5 +0,0 @@
-Please use this template for each submission
-
-```markdown
-- [Template name](https://www.nuget.org/packages/**packageName**/) - ![GitHub stars](https://img.shields.io/github/stars/**org**/**repo**?style=flat-square&cacheSeconds=604800&logo=microsoft) ![last commit](https://img.shields.io/github/last-commit/**org**/**repo**?style=flat-square&cacheSeconds=86400) Short description of the template.
-```