Remove unused broken player fixture in squeezebox tests (#181946)

tests/components/squeezebox/conftest.py

@@ -332,12 +332,6 @@ async def mock_async_browse(
     return None
 
 
-@pytest.fixture
-def player() -> MagicMock:
-    """Return a mock player."""
-    return mock_pysqueezebox_player()
-
-
 @pytest.fixture
 def player_factory() -> MagicMock:
     """Return a factory for creating mock players."""