This badge has been incorrect since its inception and keeping it
maintained properly going forward would require some additional
work in the context of https://github.com/eclipse-platform/eclipse.platform.swt/pull/2764

Therefore, this removes the badge.

Fixes https://github.com/eclipse-platform/eclipse.platform.swt/issues/2783

Part of https://github.com/eclipse-platform/eclipse.platform.swt/issues/2714