Remove dof_desc imports in primitives module

grudge/symbolic/primitives.py

@@ -35,12 +35,6 @@ from pymbolic.primitives import (
         make_common_subexpression as cse)
 from pymbolic.geometric_algebra import MultiVector
 
-# FIXME: Need to import these for backwards compatibility with
-# Mirgecom. Need to remove importing the following from
-# `grudge.symbolic.primitives` in https://github.com/illinois-ceesd/mirgecom
-from grudge.dof_desc import \
-    DOFDesc, as_dofdesc, DTAG_BOUNDARY, DISCR_TAG_BASE, QTAG_NONE  # noqa: F401
-
 
 class ExpressionBase(prim.Expression):
     def make_stringifier(self, originating_stringifier=None):