docs: Simplify PR template

Author: the-chris-mitchell

.github/pull_request_template.md

@@ -1,16 +1,3 @@
-<!--- Provide a general summary of your changes in the Title above -->
-
 ## Description
-<!--- Describe your changes in detail -->
-
-## Release Notes
-<!--- Why is this change required? What problem does it solve? -->
+<!--- Describe your changes in detail. -->
 <!--- If it fixes an open issue, please link to the issue here. -->
-
-## Screenshots (if appropriate):
-
-## Types of Changes
-<!--- What types of changes does your code introduce? Put an `x` in all the boxes that apply: -->
-- [ ] Bug fix (non-breaking change that fixes an issue)
-- [ ] New feature (non-breaking change that adds functionality)
-- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)