fix(deb): remove deleted systemd files from install #92

Job	Run time
Calculate list of debian distros and docker image tags	3s
build_and_test_backend / mypy	26s
build_and_test_backend / pylint	27s
build_and_test_backend / format	20s
build_and_test_backend / test (3.11, ubuntu-latest)	1m 35s
build_and_test_backend / test (3.12, ubuntu-latest)	1m 40s
build_and_test_frontend / format	45s
build_and_test_frontend / lint	1m 26s
build_and_test_frontend / test	54s
build_and_test_frontend / build-web	1m 19s
Build and publish ready made docker containers	7m 26s
Build .deb packages (debian:bookworm)	3m 7s
Deploy demo application	18s
Attach assets to release	0s
	19m 46s

Provide feedback