Removed AlreadyRegistered exception handling for celery 1.0 compatibility
Removed AlreadyRegistered exception handling for celery 1.0 compatibility

winhamwr/mixpanel-celery,agriffis/mixpanel-celery,bss/mixpanel-celery,winhamwr/mixpanel-celery,agriffis/mixpanel-celery,bss/mixpanel-celery,styleseat/mixpanel-celery,styleseat/mixpanel-celery