Remove schedulers from benchmark models.

[quaquel]

this removes the schedulers from the benchmark models (in one case it was in the init but not used in step anyway).

[github-actions]

Performance benchmarks:

Model	Size	Init time [95% CI]	Run time [95% CI]
BoltzmannWealth	small	🔴 +20.3% [+18.9%, +21.7%]	🔴 +23.7% [+23.4%, +23.9%]
BoltzmannWealth	large	🔴 +28.6% [+28.1%, +29.1%]	🔴 +22.0% [+21.1%, +22.8%]
Schelling	small	🟢 -8.0% [-8.4%, -7.6%]	🔵 -1.0% [-1.2%, -0.8%]
Schelling	large	🟢 -9.0% [-9.4%, -8.5%]	🔵 -1.7% [-2.2%, -1.2%]
WolfSheep	small	🔵 -0.7% [-0.9%, -0.5%]	🔵 -0.0% [-0.2%, +0.1%]
WolfSheep	large	🔵 -2.9% [-3.8%, -2.0%]	🔵 -2.2% [-4.8%, -0.2%]
BoidFlockers	small	🟢 -8.0% [-8.8%, -7.4%]	🔵 +0.9% [+0.2%, +1.6%]
BoidFlockers	large	🟢 -8.4% [-8.9%, -8.0%]	🔵 -0.3% [-1.2%, +0.7%]

[github-actions]

Performance benchmarks:

Model	Size	Init time [95% CI]	Run time [95% CI]
BoltzmannWealth	small	🔴 +23.1% [+21.9%, +24.3%]	🔴 +24.5% [+24.3%, +24.7%]
BoltzmannWealth	large	🔴 +29.4% [+29.0%, +29.7%]	🔴 +23.9% [+23.3%, +24.7%]
Schelling	small	🟢 -8.0% [-8.4%, -7.6%]	🔵 -1.2% [-1.4%, -1.0%]
Schelling	large	🟢 -8.7% [-8.9%, -8.5%]	🔵 -1.1% [-2.1%, -0.2%]
WolfSheep	small	🔵 +0.1% [-0.1%, +0.2%]	🔵 +0.0% [-0.2%, +0.2%]
WolfSheep	large	🔵 -1.1% [-1.4%, -0.7%]	🔵 +0.3% [-0.2%, +0.7%]
BoidFlockers	small	🟢 -8.0% [-8.5%, -7.4%]	🔵 -0.4% [-1.0%, +0.2%]
BoidFlockers	large	🟢 -8.3% [-8.7%, -7.9%]	🔵 -1.7% [-2.1%, -1.1%]