Update CONTRIBUTING.md

Remove the tip for Mac, the drag&drop bug has been fixed 6 months ago

Author: opcoach

CONTRIBUTING.md

@@ -37,8 +37,6 @@ Once you've downloaded the installer, proceed to the next step to install a proj
 
 Once you have the Eclipse Installer, you can set up both an IDE and a workspace containing the source-code of the project to contribute to. Each Eclipse project provides an individual _Setup_ file, which automates the installation and configuration process. See the [Project Guide](projects.md) for a list of Eclipse IDE projects. 
 
-**💡 Tip:** If you're on a Mac, you're using the latest version of the installer, because there used to be problems with drag&drop.
-
 If you have not yet chosen a project to contribute to, you can for example use the setup for **eclipse.platform.ui** [![Copy this link](https://img.shields.io/badge/Setup-orange)](https://raw.githubusercontent.com/eclipse-platform/eclipse.platform.ui/master/releng/org.eclipse.ui.releng/platformUIConfiguration.setup "Drag this setup URL in the Eclipse installer Banner"). This will allow you to get familiar with the contribution process.
 
 ### Drag and drop the setup link in the banner