this does nothing

setup.cfg

@@ -41,15 +41,7 @@ install_requires =
     # incompatible with Tahoe-LAFS'.  So duplicate them here (the ones that
     # have been observed to cause problems).
     Twisted[tls,conch] >= 19.10.0
-
-    # Tahoe-LAFS 1.17 adds a cbor2 dependency; cbor2 has a setuptools_scm
-    # dependency; setuptools_scm has dropped Python 2 support without
-    # declaring it in their metadata.  Pin setuptools_scm to an older version
-    # here to avoid getting a broken version.
-    setuptools_scm < 6
-
     tahoe-lafs >=1.17,<1.18
-
     treq
     pyutil
     prometheus-client