refactor(nc-plugin): remove unnecessary .github directory

packages/nc-plugin/.github/CONTRIBUTING.md

@@ -1,3 +0,0 @@
-# Example Contributing Guidelines
-
-This is an example of GitHub's contributing guidelines file. Check out GitHub's [CONTRIBUTING.md help center article](https://help.github.com/articles/setting-guidelines-for-repository-contributors/) for more information.

packages/nc-plugin/.github/ISSUE_TEMPLATE.md

@@ -1,9 +0,0 @@
-- **I'm submitting a ...**
-  [ ] bug report
-  [ ] feature request
-  [ ] question about the decisions made in the repository
-  [ ] question about how to use this project
-
-- **Summary**
-
-- **Other information** (e.g. detailed explanation, stack traces, related issues, suggestions how to fix, links for us to have context, eg. StackOverflow, personal fork, etc.)

packages/nc-plugin/.github/PULL_REQUEST_TEMPLATE.md

@@ -1,7 +0,0 @@
-- **What kind of change does this PR introduce?** (Bug fix, feature, docs update, ...)
-
-- **What is the current behavior?** (You can also link to an open issue here)
-
-- **What is the new behavior (if this is a feature change)?**
-
-- **Other information**: