remove unused ManifestBackendArray class

virtualizarr/readers/common.py

@@ -19,10 +19,9 @@
     Variable,
     open_dataset,
 )
-from xarray.backends import AbstractDataStore, BackendArray
+from xarray.backends import AbstractDataStore
 from xarray.core.indexes import PandasIndex
 
-from virtualizarr.manifests import ManifestArray
 from virtualizarr.utils import _FsspecFSFromFilepath
 
 XArrayOpenT = str | os.PathLike[Any] | BufferedIOBase | AbstractDataStore
@@ -34,12 +33,6 @@
         DataTree = Any
 
 
-class ManifestBackendArray(ManifestArray, BackendArray):
-    """Using this prevents xarray from wrapping the KerchunkArray in ExplicitIndexingAdapter etc."""
-
-    ...
-
-
 def open_loadable_vars_and_indexes(
     filepath: str,
     loadable_variables,