[Importer] Delete new root .project if project is ignored

Ref JBIDE-19846

Change-Id: Ib2fc934d8f84e390aa9c8acbe45e9becd759d349
Signed-off-by: Mickael Istria <mistria@redhat.com>

bundles/org.eclipse.e4.ui.importer/src/org/eclipse/ui/internal/wizards/datatransfer/EasymportJob.java

diff --git a/bundles/org.eclipse.e4.ui.importer/src/org/eclipse/ui/internal/wizards/datatransfer/EasymportJob.java b/bundles/org.eclipse.e4.ui.importer/src/org/eclipse/ui/internal/wizards/datatransfer/EasymportJob.java
index 04d27d6..8d81bc9 100644
--- a/bundles/org.eclipse.e4.ui.importer/src/org/eclipse/ui/internal/wizards/datatransfer/EasymportJob.java
+++ b/bundles/org.eclipse.e4.ui.importer/src/org/eclipse/ui/internal/wizards/datatransfer/EasymportJob.java
@@ -97,7 +97,8 @@
 	@Override
 	protected IStatus run(IProgressMonitor monitor) {
 		try {
-			this.isRootANewProject = !new File(this.rootDirectory, ".project").isFile();
+			File rootProjectFile = new File(this.rootDirectory, IProjectDescription.DESCRIPTION_FILE_NAME);
+			this.isRootANewProject = !rootProjectFile.isFile();
 			this.rootProject = toExistingOrNewProject(
 					this.rootDirectory,
 					monitor,
@@ -131,6 +132,9 @@
 					});
 					if (this.discardRootProject) {
 						this.rootProject.delete(false, true, monitor);
+						if (this.isRootANewProject) {
+							rootProjectFile.delete();
+						}
 						this.report.remove(this.rootProject);
 					}
 				}