Delete ISSUE_TEMPLATE.md

Now using newer GitHub format

.github/ISSUE_TEMPLATE.md

@@ -1,16 +0,0 @@
-For :bug: bug reports, please fill out the information below plus any additional relevant information. If this is a feature request, feel free to clear the form.
-
-**Short problem description**
-
-**Environment**
-- [ ] I am using Node.js v12.x LTS or higher
-- [ ] `npm install` or `yarn` reports success
-- Actual Node.js version (`node --version`):
-- Operating system (`uname -a` on *nix systems):
-- Revision (`git rev-parse --short HEAD`):
-
-**Expected behavior**
-
-**Actual behavior**
-
-**Steps to reproduce**