ALTER TABLE user_ai_prefs DROP COLUMN display_tz;
ALTER TABLE image_exif DROP COLUMN original_date_taken_tz_source;
ALTER TABLE image_exif DROP COLUMN original_camera_offset_minutes;
ALTER TABLE image_exif DROP COLUMN original_date_utc;
ALTER TABLE image_exif DROP COLUMN date_taken_tz_source;
ALTER TABLE image_exif DROP COLUMN camera_offset_minutes;
ALTER TABLE image_exif DROP COLUMN date_utc;