Remove component power and current methods in EVChargerPool

... because there are no use cases for these, now that we have the
`component_data` method.

Signed-off-by: Sahas Subramanian <[email protected]>

Author: shsms

src/frequenz/sdk/timeseries/ev_charger_pool/_ev_charger_pool.py

@@ -120,53 +120,6 @@ async def total_power(self) -> FormulaReceiver:
             FormulaGeneratorConfig(component_ids=self._component_ids),
         )
 
-    async def current(self, component_id: int) -> FormulaReceiver3Phase:
-        """Fetch the 3-phase current for the given EV Charger id.
-
-        Args:
-            component_id: id of the EV Charger to stream current values for.
-
-        Returns:
-            A *new* receiver that will stream 3-phase current values for the given
-                EV Charger.
-
-        Raises:
-            EVChargerPoolError: if the given component_id is not part of the pool.
-        """
-        if component_id not in self._component_ids:
-            raise EVChargerPoolError(
-                f"{component_id=} is not part of the EVChargerPool"
-                f" (with ids={self._component_ids})"
-            )
-        return await self._formula_pool.from_generator(
-            f"ev_charger_current_{component_id}",
-            EVChargerCurrentFormula,
-            FormulaGeneratorConfig(component_ids={component_id}),
-        )
-
-    async def power(self, component_id: int) -> FormulaReceiver:
-        """Fetch the power for the given EV Charger id.
-
-        Args:
-            component_id: id of the EV Charger to stream power values for.
-
-        Returns:
-            A *new* receiver that will stream power values for the given EV Charger.
-
-        Raises:
-            EVChargerPoolError: if the given component_id is not part of the pool.
-        """
-        if component_id not in self._component_ids:
-            raise EVChargerPoolError(
-                f"{component_id=} is not part of the EVChargerPool"
-                f" (with ids={self._component_ids})"
-            )
-        return await self._formula_pool.from_generator(
-            f"ev_charger_current_{component_id}",
-            EVChargerPowerFormula,
-            FormulaGeneratorConfig(component_ids={component_id}),
-        )
-
     async def component_data(self, component_id: int) -> Receiver[EVChargerData]:
         """Stream 3-phase current values and state of an EV Charger.