Remove the no-longer-necessary command hack

Signed-off-by: Michał Górny <mgorny@quansight.com>

Author: mgorny

variantlib/commands/get_variant_hash.py

@@ -6,7 +6,6 @@
 from variantlib import __package_name__
 from variantlib.api import VariantDescription
 from variantlib.api import VariantProperty
-from variantlib.constants import NULL_VARIANT_LABEL
 
 
 def get_variant_hash(args: list[str]) -> None:
@@ -36,8 +35,6 @@ def get_variant_hash(args: list[str]) -> None:
 
 def _print_variant_hash(properties: list[VariantProperty]) -> None:
     # Transform properties into a VariantDescription
-    vdesc = VariantDescription(
-        properties=properties, label="na" if properties else NULL_VARIANT_LABEL
-    )
+    vdesc = VariantDescription(properties=properties)
 
     sys.stdout.write(f"{vdesc.hexdigest}\n")

variantlib/commands/make_variant.py

@@ -169,7 +169,7 @@ def _make_variant(
 
     if not is_null_variant:
         # Transform properties into a VariantDescription
-        vdesc = VariantDescription(properties=properties, label="na")
+        vdesc = VariantDescription(properties=properties)
 
         if validate_properties:
             env_factory: DefaultIsolatedEnv | nullcontext[None]