How to tell eclipse to ignore: “No persistence.xml file found in project”

Question

For my projects Necessity i regroup all the persistence.xml entries in one core project which i bind as maven dependency wherever i need.

The problem is that the eclipse

Answer 1

1. go to .setting directory of the project

2. modify org.eclipse.wst.common.project.facet.core.xml
        remove the following:
              
3. Refresh the project

Cheers!!!