fix: remove legacy service account binding #2598

Job	Run time
Run Cargo Udeps	1m 49s
Decide if Helm charts are pushed to the helm repository based on action trigger	2s
Run Cargo Deny (advisories)	28s
Run Cargo Deny (bans licenses sources)	22s
Run Rustfmt	13s
Run RustDoc	1m 10s
Run Clippy	34s
Check if committed README is the one we would render from the available parts	22s
Run Cargo Tests	27s
Check if committed Helm charts are up to date	35s
All tests passed	4s
Package Charts, Build Docker Image and publish them - ubuntu-latest	11m 21s
Package Charts, Build Docker Image and publish them - ubicloud-standard-8-arm	10m 42s
Build and publish manifest list	40s
Run the OpenShift Preflight check on the published images	16s
	29m 5s

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