Delete .github/ISSUE_TEMPLATE directory

We can rely on the default templates from https://github.com/cucumber/.github instead

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,30 +0,0 @@
----
-name: Bug report
-about: Create a report to help us improve
-title: ''
-labels: bug
-assignees: ''
-
----
-
-Please answer these questions before submitting a bug report.
-
-### What version of godog are you using?
-```
-> godog version
-```
-
-### What version of Go are you using?
-```
-> go version
-```
-
-### What did you do?
-If possible, provide a recipe for reproducing the error.
-
-### What did you expect to see?
-
-### What did you see instead?
-
-### Additional context
-Add any other context about the problem here.