It is part of the "Selective Download" option. You do not need this file to play the single-player campaign.
FitGirl repacks use a "selective download" system to help users save bandwidth and disk space. Files marked as optional or selective (like 4K videos, bonus soundtracks, or specific language packs) are not strictly required for the core game to launch and run in its basic state. fg-optional-psn-services.bin
You only care about the main story campaign and have no interest in online play. It is part of the "Selective Download" option
if you only care about the single-player story and want to save disk space or reduce installation time. fg-optional-psn-services.bin
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