chore: remove unused import and remove any schema

src/libecalc/application/energy/emitter.py

@@ -1,17 +1,14 @@
 import abc
 from typing import Optional
 
-from pydantic import Field
-
 from libecalc.application.energy.component_energy_context import ComponentEnergyContext
 from libecalc.application.energy.energy_model import EnergyModel
-from libecalc.common.variables import ExpressionEvaluator
 from libecalc.core.result.emission import EmissionResult
 
 
 class Emitter(abc.ABC):
     """
-    Something that emits something.
+    Something that emits something..
     """
 
     @property
@@ -24,4 +21,3 @@ def evaluate_emissions(
         energy_context: ComponentEnergyContext,
         energy_model: EnergyModel,
     ) -> Optional[dict[str, EmissionResult]]: ...
-

src/libecalc/common/variables.py

@@ -7,7 +7,6 @@
 import numpy as np
 from numpy.typing import NDArray
 from pydantic import BaseModel, ConfigDict, Field, model_validator
-from pydantic_core import CoreSchema, core_schema
 
 from libecalc.common.errors.exceptions import ProgrammingError
 from libecalc.common.temporal_model import TemporalModel
@@ -177,7 +176,3 @@ def get_subset_for_period(self, period: Period) -> ExpressionEvaluator: ...
     def evaluate(
         self, expression: Union[Expression, TemporalModel, dict[Period, Expression]]
     ) -> NDArray[np.float64]: ...
-
-    @classmethod
-    def __get_pydantic_core_schema__(cls, source, handler) -> CoreSchema:
-        return core_schema.any_schema()