Stop filtering LOAD components from microgrid component lists

We used to filter out `LOAD` components in the MicrogridClient,
because those were always just placeholders, and not actual active
components that can stream data.

Now that the LOAD components are going away, we don't have to filter
by them anymore.

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

Author: shsms

src/frequenz/sdk/microgrid/client/_client.py

@@ -244,10 +244,7 @@ async def components(self) -> Iterable[Component]:
             )
         components_only = filter(
             lambda c: c.category
-            not in (
-                microgrid_pb.ComponentCategory.COMPONENT_CATEGORY_SENSOR,
-                microgrid_pb.ComponentCategory.COMPONENT_CATEGORY_LOAD,
-            ),
+            is not microgrid_pb.ComponentCategory.COMPONENT_CATEGORY_SENSOR,
             component_list.components,
         )
         result: Iterable[Component] = map(

tests/microgrid/test_client.py

@@ -74,13 +74,10 @@ async def test_components(self) -> None:
                 Component(0, ComponentCategory.METER),
             }
 
-            # sensors/loads are not counted as components by the API client
+            # sensors are not counted as components by the API client
             servicer.add_component(
                 1, microgrid_pb.ComponentCategory.COMPONENT_CATEGORY_SENSOR
             )
-            servicer.add_component(
-                2, microgrid_pb.ComponentCategory.COMPONENT_CATEGORY_LOAD
-            )
             assert set(await microgrid.components()) == {
                 Component(0, ComponentCategory.METER),
                 Component(0, ComponentCategory.BATTERY),
@@ -91,7 +88,6 @@ async def test_components(self) -> None:
                 [
                     (9, microgrid_pb.ComponentCategory.COMPONENT_CATEGORY_METER),
                     (99, microgrid_pb.ComponentCategory.COMPONENT_CATEGORY_INVERTER),
-                    (66, microgrid_pb.ComponentCategory.COMPONENT_CATEGORY_LOAD),
                     (666, microgrid_pb.ComponentCategory.COMPONENT_CATEGORY_SENSOR),
                     (999, microgrid_pb.ComponentCategory.COMPONENT_CATEGORY_BATTERY),
                 ]
@@ -104,7 +100,6 @@ async def test_components(self) -> None:
 
             servicer.set_components(
                 [
-                    (66, microgrid_pb.ComponentCategory.COMPONENT_CATEGORY_LOAD),
                     (99, microgrid_pb.ComponentCategory.COMPONENT_CATEGORY_SENSOR),
                     (
                         100,