refactor(test dataset): remove testing of strict hash checking due to performance reasons

tests/test_zema_dataset.py

@@ -11,7 +11,6 @@ from zema_emc_annotated.data_types import UncertainArray
 from zema_emc_annotated.dataset import (
     ExtractionDataType,
     LOCAL_ZEMA_DATASET_PATH,
-    ZEMA_DATASET_HASH,
     ZEMA_DATASET_URL,
     ZEMA_QUANTITIES,
     ZeMASamples,
@@ -126,10 +125,6 @@ def test_dataset_has_attribute_ZEMA_DATASET_HASH() -> None:
     assert hasattr(dataset, "ZEMA_DATASET_HASH")
 
 
-def test_dataset_attribute_ZEMA_DATASET_HASH() -> None:
-    assert isinstance(ZEMA_DATASET_HASH, str)
-
-
 def test_dataset_attribute_ZEMA_DATASET_HASH_in_all() -> None:
     assert "ZEMA_DATASET_HASH" in dataset.__all__