Fix Dataset imports and module loading

 - remove unused imports in generating.py
 - add stream_hdf to loaded module list

CHANGELOG.md

@@ -3,8 +3,11 @@
 
 ## Current Master (0.4+git)
 
-- Remove everything related to RASR/Sprint interfacing
-- Remove task-system that is no longer needed
+- Remove "Sprint" related code https://github.com/JackTemaki/MiniReturnn/pull/17
+  - Remove everything related to RASR/Sprint interfacing
+  - Remove task-system that is no longer needed
+  - Remove Sprint Datasets
+- Cleanup dataset imports and fix missing stream_hdf module loading
 
 
 ## Version 0.4

returnn/datasets/basic.py

@@ -870,7 +870,7 @@ def get_dataset_class(name: Union[str, Type[Dataset]]) -> Optional[Type[Dataset]
 
     # Only those modules which make sense to be loaded by the user,
     # because this function is only used for such cases.
-    mod_names = ["hdf", "generating", "numpy_dump", "meta", "lm", "map"]
+    mod_names = ["audio", "generating", "hdf", "lm", "map", "meta", "numpy_dump", "stream_hdf"]
     for mod_name in mod_names:
         mod = import_module("returnn.datasets.%s" % mod_name)
         for name_, clazz in vars(mod).items():

returnn/datasets/generating.py

@@ -6,15 +6,10 @@
 
 from typing import Optional, Sequence
 import numpy
-import sys
 import typing
 
-from returnn.util.basic import class_idx_seq_to_1_of_k, CollectionReadCheckCovered
-from returnn.log import log
+from returnn.util.basic import class_idx_seq_to_1_of_k
 
-from .util.feature_extraction import ExtractAudioFeatures
-from .util.vocabulary import *
-from .audio import OggZipDataset  # noqa # for API compatibility
 from .basic import Dataset, DatasetSeq, convert_data_dims
 from .cached2 import CachedDataset2