diff -r 058bb3dc685f -r 0b59724cb3f2 misc/migration/3.22.0_Any.py
--- a/misc/migration/3.22.0_Any.py	Mon Jan 04 18:40:30 2016 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,21 +0,0 @@
-if confirm('use Europe/Paris as timezone?'):
-    timezone = 'Europe/Paris'
-else:
-    import pytz
-    while True:
-        timezone = raw_input('enter your timezone')
-        if timezone in pytz.common_timezones:
-            break
-
-dbdriver = repo.system_source.dbdriver
-if dbdriver == 'postgres':
-    sql("SET TIME ZONE '%s'" % timezone)
-
-for entity in schema.entities():
-    if entity.final:
-        continue
-    change_attribute_type(entity.type, 'creation_date', 'TZDatetime', ask_confirm=False)
-    change_attribute_type(entity.type, 'modification_date', 'TZDatetime', ask_confirm=False)
-
-if dbdriver == 'postgres':
-    sql("SET TIME ZONE UTC")