Remove jdt dependencies from XTEXT 2.0 project

how can i remove JDT deperndencies from an XTEXT 2.0 project? I tried to follow the hints here (comment 11) but i didn't success in removing JDT dependencies.

When I try to validate the product Eclipse says that the plugin org.eclipse.xtext.common.types.ui is missing, but if i add that plugin, new dependecies to j开发者_JS百科dt core and ui are created.

Thanks

---

The problem i asked about was related to the creation of a new xtext plugin where i pasted a grammar previously developed. I didn't success in removing the dependecies from that project.

Instead i imported the old plugin in Indigo with Xtext 2.0 and then I fixed the various errors related to different implementations of the new framework. In this case the project, which didn't belong to JDT, does not create any dependency errors.