Remove stale benchmarksgame submodule entry from git index #3

Job	Run time
Analyze (python)	1m 14s
Analyze (swift)	7m 11s
Analyze (javascript-typescript)	1m 50s
Analyze (c-cpp)	9m 1s
Analyze (actions)	46s
Analyze (go)	1m 54s
Analyze (rust)	6m 55s
	28m 51s

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