[#3283] Remove oldstyle appointments flow #14794

Job	Run time
Set up docker build 'dynamic' env variables	1s
Build and check documentation	2m 57s
End-to-end tests, chromium	13m 29s
End-to-end tests, firefox	16m 15s
Run the Django test suite	7m 46s
End-to-end tests, webkit	12m 3s
Run the Django test suite in reverse	5m 43s
docker_build (production) / Build image	2m 50s
docker_build (extensions, token_exchange,prefill_haalcentraalhr, all-extensions-) / Build image	2m 47s
Scan docker image	2m 31s
Simulate upgrading instances (2.7.4)	1m 25s
Simulate upgrading instances (2.7.8)	1m 19s
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 6s

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