https://wccftech.com/call-of-duty-modern-warfare-is-getting-mode-specific-uninstall-options-on-pc/

Over the course of the past year, Call of Duty Modern Warfare became the largest game in terms of storage size, with its latest updates putting it at over 200GB. This inevitably drew significant criticism from fans.

Luckily, it seems like a new Call of Duty Modern Warfare update due to release later today will enable 'mode-specific uninstall options' on PC. This should ease the burden on your hard drive if, for instance, you've already completed the single player campaign and only really intend to keep playing the game's multiplayer modes going forward. The news was revealed in a tweet from Paul Haile, Production Director at developer Infinity Ward.