def remove_embedded_layers(sender, **kwargs):
"""
Checks for layers embedded from the deleted layer,
deletes them accordingly and remove the whole project if empty
"""
layer = kwargs['instance']
# If it is embedded make sure it is removed from the project
# because it may be a cascade
if layer.parent_project is not None:
project = QgsProject()
assert project.read(layer.project.qgis_file.file.name)
project.removeMapLayers([layer.qgs_layer_id])
assert project.write()
