Remove comma following **dict as it is python3 only

python/dune/codegen/sumfact/realization.py

@@ -259,7 +259,7 @@ def realize_sumfact_kernel_function(sf):
             # at the same time store the instruction ID for the next instruction to depend on
             insn_dep = frozenset({instruction(assignee=prim.Subscript(prim.Variable(out), output_inames + vec_iname),
                                               expression=matprod,
-                                              **insn_args,
+                                              **insn_args
                                               )
                                   })