chore: disallow github blank issue and cleanup

.github/ISSUE_TEMPLATE.md

@@ -1,17 +0,0 @@
-<!--
-Before reporting a bug:
-If your database schema has changed while the PostgREST server is running,
-send the server a SIGUSR1 signal or restart it(http://postgrest.org/en/stable/admin.html#schema-reloading)
-to ensure the schema cache is not stale. This sometimes fixes apparent bugs.
--->
-### Environment
-
-* PostgreSQL version: (if using docker, specify the image)
-* PostgREST version: (if using docker, specify the image)
-* Operating system:
-
-### Description of issue
-
-(Expected behavior vs actual behavior)
-
-(Steps to reproduce: Include a minimal SQL definition plus how you make the request to PostgREST and the response body)

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1 @@
+blank_issues_enabled: false