Remove internal microgrid API client

Signed-off-by: Leandro Lucarella <[email protected]>

Author: llucax

src/frequenz/sdk/microgrid/__init__.py

@@ -122,7 +122,7 @@
 """  # noqa: D205, D400
 
 from ..actor import ResamplerConfig
-from . import _data_pipeline, client, component, connection_manager, metadata
+from . import _data_pipeline, client, component, connection_manager
 from ._data_pipeline import (
     battery_pool,
     consumer,
@@ -157,7 +157,6 @@ async def initialize(host: str, port: int, resampler_config: ResamplerConfig) ->
     "grid",
     "frequency",
     "logical_meter",
-    "metadata",
     "producer",
     "voltage",
 ]