old open issues have been transferred; update readme

Author: SethTisue

README.md

@@ -62,14 +62,6 @@ object TestSimpleParser extends SimpleParser {
 For a detailed unpacking of this example see
 [Getting Started](docs/Getting_Started.md).
 
-## Issues
-
-Many old issues from the Scala JIRA issue tracker have been migrated
-here, but not all of them. Community assistance identifying and
-migrating still-relevant issues is welcome.  See [this
-page](https://github.com/scala/scala-parser-combinators/issues/61) for
-details.
-
 ## Contributing
 
  * See the [Scala Developer Guidelines](https://github.com/scala/scala/blob/2.13.x/CONTRIBUTING.md) for general contributing guidelines