CONTRIBUTING.md: remove issue template

Author: julienschmidt

CONTRIBUTING.md

@@ -4,14 +4,6 @@
 
 Before creating a new Issue, please check first if a similar Issue [already exists](https://github.com/go-sql-driver/mysql/issues?state=open) or was [recently closed](https://github.com/go-sql-driver/mysql/issues?direction=desc&page=1&sort=updated&state=closed).
 
-Please provide the following minimum information:
-* Your Go-MySQL-Driver version (or git SHA)
-* Your Go version (run `go version` in your console)
-* A detailed issue description
-* Error Log if present
-* If possible, a short example
-
-
 ## Contributing Code
 
 By contributing to this project, you share your code under the Mozilla Public License 2, as specified in the LICENSE file.