I did. This department exists purely to do things that should already be done by other departments and entities.
Who provides information? The AI and various departments, depending on what information it is.
Who investigates and gathers details? The AI, Security, and Internal Affairs, depending on what the investigation in question is about.
Who maintains the comms and computer systems, as well as records? The Chief Engineer for the first two, HoP for the latter.
Also, no, you can't remove every department with my argument, because the ones present are key personnel. The station is private property, thus it has Security. The station requires maintenance, thus it has Engineering. Research requires materials, thus it has Supply. People work on the station for extended periods in various life-endangering jobs, thus there is Medical. All of these departments mesh together, providing each other information and keeping the station maintained and each other in good health. This entire department suggestion is just a layer of redundancy, one that is not required.
As a final example, there were once telecomms operators. They are no more because it was a job that did literally nothing 95% of the time.