In previous versions of Google Developer Console this could be possible unpublising the last .apk and enable to production your desired version
but now it can´t be possible.
Note that rollbacks aren’t supported due to the app versioning requirements of the Android platform. If you need to rollback, consider launching a previous APK with a new version number. However, this practice should be used only as a last resort, as users will lose access to new features and your old app may not be forward-compatible with your server changes or data formats, so be sure to run alpha and beta tests of your updates.
You can see the previous releases but you can´t enable again:
You need to create and publish a new release with a consecutive versionCode.
