get rid of celery/celerybeat

alternative to https://github.com/ansible/awx/pull/2530 which makes use
of https://pypi.org/project/schedule/

this doesn't have support for any persistence (like how celery beat uses
a shelve file), because all of our periodic jobs run at most every few
minutes

requirements/README.md

@@ -137,11 +137,6 @@ in the top-level Makefile.
 
 ## Library Notes
 
-### celery
-
-This is only used for the beat feature (running periodic tasks).
-This could be replaced, see: https://github.com/ansible/awx/pull/2530
-
 ### requests-futures
 
 This can be removed when a solution for the external log queuing is ready.

requirements/requirements.in

@@ -4,7 +4,6 @@ asgi-amqp>=1.1.4  # see library notes, related to channels 2
 azure-keyvault==1.1.0  # see UPGRADE BLOCKERs
 boto  # replacement candidate https://github.com/ansible/awx/issues/2115
 channels==1.1.8  # UPGRADE BLOCKER: Last before backwards-incompatible channels 2 upgrade
-celery==4.3.0  # see library notes
 daphne==1.4.2  # UPGRADE BLOCKER: last before channels 2 but not pinned by other deps
 django==2.2.8  # see UPGRADE BLOCKERs
 django-auth-ldap
@@ -35,6 +34,7 @@ pyparsing
 python-memcached
 python-radius
 python3-saml
+schedule==0.6.0
 social-auth-core==3.2.0  # see UPGRADE BLOCKERs
 social-auth-app-django==3.1.0  # see UPGRADE BLOCKERs
 requests
@@ -45,4 +45,4 @@ twilio
 uWSGI
 uwsgitop
 pip==19.3.1  # see UPGRADE BLOCKERs
-setuptools==41.6.0  # see UPGRADE BLOCKERs
+setuptools==41.6.0  # see UPGRADE BLOCKERs

requirements/requirements.txt

@@ -10,10 +10,8 @@ automat==0.8.0            # via twisted
 azure-common==1.1.23      # via azure-keyvault
 azure-keyvault==1.1.0
 azure-nspkg==3.0.2        # via azure-keyvault
-billiard==3.6.1.0         # via celery
 boto==2.49.0
 cachetools==3.1.1         # via google-auth
-celery==4.3.0
 certifi==2019.11.28       # via kubernetes, msrest, requests
 cffi==1.13.2              # via cryptography
 channels==1.1.8
@@ -62,7 +60,7 @@ jaraco.text==3.2.0        # via irc, jaraco.collections
 jinja2==2.10.3
 jsonpickle==1.2           # via asgi-amqp
 jsonschema==3.2.0
-kombu==4.6.7              # via asgi-amqp, celery
+kombu==4.6.7              # via asgi-amqp
 kubernetes==10.0.1        # via openshift
 lockfile==0.12.2          # via python-daemon
 lxml==4.4.2               # via xmlsec
@@ -98,7 +96,7 @@ python-radius==1.0
 python-string-utils==0.6.0  # via openshift
 python3-openid==3.1.0     # via social-auth-core
 python3-saml==1.9.0
-pytz==2019.3              # via celery, django, irc, tempora, twilio
+pytz==2019.3              # via django, irc, tempora, twilio
 pyyaml==5.2               # via ansible-runner, djangorestframework-yaml, kubernetes
 requests-futures==1.0.0
 requests-oauthlib==1.3.0  # via kubernetes, msrest, social-auth-core
@@ -106,6 +104,7 @@ requests==2.22.0
 rsa==4.0                  # via google-auth
 ruamel.yaml.clib==0.2.0   # via ruamel.yaml
 ruamel.yaml==0.16.5       # via openshift
+schedule==0.6.0
 six==1.13.0               # via ansible-runner, asgi-amqp, asgiref, autobahn, automat, cryptography, django-extensions, google-auth, isodate, jaraco.classes, jaraco.collections, jaraco.itertools, jaraco.logging, jaraco.text, jsonschema, kubernetes, openshift, pygerduty, pyhamcrest, pyrad, pyrsistent, python-dateutil, python-memcached, slackclient, social-auth-app-django, social-auth-core, tacacs-plus, tempora, twilio, txaio, websocket-client
 slackclient==1.1.2
 smmap2==2.0.5             # via gitdb2
@@ -120,7 +119,7 @@ txaio==18.8.1             # via autobahn
 urllib3==1.25.7           # via kubernetes, requests
 uwsgi==2.0.18
 uwsgitop==0.11
-vine==1.3.0               # via amqp, celery
+vine==1.3.0               # via amqp
 websocket-client==0.56.0  # via kubernetes, slackclient
 xmlsec==1.3.3             # via python3-saml
 zipp==0.6.0               # via importlib-metadata