fix: Update cutout due to #262 (#334)

## Description
The recent PR #262 broke the cutout input


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Author: HCookie

src/anemoi/inference/inputs/cutout.py

@@ -233,9 +233,7 @@ def load_forcings_state(self, *, dates: list[Date], current_state: State) -> Sta
         combined_fields = {}
 
         for source in self.sources.keys():
-            source_state = self.sources[source].load_forcings_state(
-                variables=self.variables, dates=dates, current_state=current_state
-            )["fields"]
+            source_state = self.sources[source].load_forcings_state(dates=dates, current_state=current_state)["fields"]
             source_mask = self.masks[source]
 
             combined_fields = _mask_and_combine_states(combined_fields, source_state, source_mask, source_state.keys())