Remove extra game status change when killing a game

[arielj]

This PR fixes #1698 . The problem is better explained in the linked issue but basically, when killing a game using the (x) button in the library, the libraryStatus global state got corrupted because of the line I'm now removing.

This line is not used when killing a game in the Game Page component so I understand it's safe to remove and it fixes the problem.

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Use the following Checklist if you have changed something on the Backend or Frontend:

• Tested the feature and it's working on a current and clean install.
• Tested the main App features and they are still working on a current and clean install. (Login, Install, Play, Uninstall, Move games, etc.)
• Created / Updated Tests (If necessary)
• Created / Updated documentation (If necessary)

[flavioislima]

I think we probably forgot to remove that line on a previous refactoring.