remove extraneous __init__ return types from lib filesystem per https…

…://github.com/hydroshare/hydroshare_jupyter_sync/pull/80\#discussion_r694308040

hydroshare_jupyter_sync/lib/filesystem/fs_map.py

@@ -103,7 +103,7 @@ class LocalFSMap(FSMap, IEntityFSMap):
     """Class representing the relationship between *local* HydroShare resources', resource files,
     and resource MD5 Hashes."""
 
-    def __init__(self, fs_root: Union[str, Path]) -> Dict[ResourceId, FSResourceMap]:
+    def __init__(self, fs_root: Union[str, Path]) -> None:
         super().__init__()
         self.fs_root = Path(fs_root).expanduser().resolve()
 
@@ -154,9 +154,7 @@ class RemoteFSMap(FSMap):
     """Class representing the relationship between remote HydroShare resource's, resource files, and
     resource MD5 Hashes."""
 
-    def __init__(
-        self, fs_root: Union[str, Path], hydroshare: HydroShare
-    ) -> Dict[ResourceId, FSResourceMap]:
+    def __init__(self, fs_root: Union[str, Path], hydroshare: HydroShare) -> None:
         super().__init__()
         self.fs_root = Path(fs_root).expanduser().resolve()
         self._hydroshare = hydroshare

hydroshare_jupyter_sync/lib/filesystem/fs_resource_map.py

@@ -63,7 +63,7 @@ def files(self) -> List[Path]:
 class LocalFSResourceMap(FSResourceMap, IEntityFSResourceMap):
     """Concrete class representing the relationship between a local file (not directory) path to the file's MD5 Hash."""
 
-    def __init__(self, resource_path: Union[Path, str]) -> Dict[Path, MD5Hash]:
+    def __init__(self, resource_path: Union[Path, str]) -> None:
         super().__init__()
         self.resource_path = Path(resource_path).expanduser().resolve()
         self.resource_id = resource_path.name
@@ -172,7 +172,7 @@ def _insert(self, resource_file: Union[Path, str]) -> None:
 
 
 class RemoteFSResourceMap(FSResourceMap):
-    def __init__(self, resource: Resource) -> Dict[Path, MD5Hash]:
+    def __init__(self, resource: Resource) -> None:
         super().__init__()
         self.resource = resource
         self.resource_id = resource.resource_id