Remove unused import from All projects in eclipse

Key combination Ctrl+ Shift + O - will trigger the Organize Imports that will remove and add missing imports.

To apply it on whole workspace you just have to select the project in the view Package Explorer and then use the key combination

Right click your working set node, or all projects that you need and select Source->Organize Imports.

Shortcut is Ctrl+Shift+O, it is basically written in the menu so if you are using a different OS, you should be able to find it. It works on single files as well as project nodes in the Package Explorer