[#3283] Remove oldstyle appointments flow #14795

Job	Run time
Build and check documentation	3m 17s
End-to-end tests, chromium	13m 49s
End-to-end tests, firefox	16m 23s
Run the Django test suite	8m 11s
End-to-end tests, webkit	12m 12s
Run the Django test suite in reverse	5m 28s
Set up docker build 'dynamic' env variables	1s
docker_build (production) / Build image	2m 45s
docker_build (extensions, token_exchange,prefill_haalcentraalhr, all-extensions-) / Build image	2m 57s
Scan docker image	2m 4s
Simulate upgrading instances (2.7.4)	1m 21s
Simulate upgrading instances (2.7.8)	1m 18s
Check for unexepected OAS changes	0s
Generate Postman collection from OAS	0s
Validate OAS	0s
Generate SDKs from OAS	0s
Push Docker image	0s
update-docker-readme	0s
	1h 9m 46s

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