IGNFrance: fix deprecation warning from xml
geopy/geocoders/ignfrance.py:422: PendingDeprecationWarning: This method will be removed in future versions.  Use 'tree.iter()' or 'list(tree.iter())' instead.
@@ -419,7 +419,7 @@ class IGNFrance(Geocoder):
ns = '{%s}' % namespace
ns = u(ns)
nsl = len(ns)
- for elem in doc.getiterator():
+ for elem in doc.iter():
if elem.tag.startswith(ns):
elem.tag = elem.tag[nsl:]
