De-clutter variables table (prefill columns) #13361

Job	Run time
Run the Django test suite	8m 33s
Set up docker build 'dynamic' env variables	1s
Build and check documentation	4m 0s
End-to-end tests, chromium	12m 35s
End-to-end tests, firefox	15m 10s
End-to-end tests, webkit	11m 3s
Run the Django test suite in reverse	5m 35s
docker_build (production) / Build image	2m 50s
docker_build (extensions, token_exchange,prefill_haalcentraalhr, all-extensions-) / Build image	2m 44s
Scan docker image	2m 12s
Check for unexepected OAS changes	4s
Validate OAS	15s
Generate Postman collection from OAS	11s
Generate SDKs from OAS	34s
Push Docker image	0s
update-docker-readme	0s
	1h 5m 47s

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