ProjectExplorer: Delete file even if failed to remove

... when user asks to delete from FS.

When a file is included using a wildcard, the project managers fail to
delete it.

Change-Id: I4f2bc6373c5ade8c5e06b580e41519c63f47891d
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

src/plugins/projectexplorer/projectexplorer.cpp

@@ -3169,7 +3169,8 @@ void ProjectExplorerPluginPrivate::removeFile()
                                  tr("Could not remove file %1 from project %2.")
                                  .arg(QDir::toNativeSeparators(filePath))
                                  .arg(folderNode->projectNode()->displayName()));
-            return;
+            if (!deleteFile)
+                return;
         }
 
         DocumentManager::expectFileChange(filePath);