remove global support dofs, they are not used (#831)

* remove global support dofs, they are not used

* ruff

Author: mscroggs

ffcx/ir/representation.py

@@ -386,9 +386,7 @@ def _compute_integral_ir(
         # Pre-compute the dimension number of dofs in each local element.
         # Used to compute the shape of the locally assembled tensor, as well the
         # coefficient offset
-        element_dimensions = {
-            element: element.dim + element.num_global_support_dofs for element in unique_elements
-        }
+        element_dimensions = {element: element.dim for element in unique_elements}
 
         # Create dimensions of primary indices, needed to reset the argument
         # 'A' given to tabulate_tensor() by the assembler.
@@ -603,10 +601,7 @@ def _compute_expression_ir(
 
     # Prepare dimensions of all unique element in expression, including
     # elements for arguments, coefficients and coordinate mappings
-    element_dimensions = {
-        element: element.dim + element.num_global_support_dofs
-        for element in analysis.unique_elements
-    }
+    element_dimensions = {element: element.dim for element in analysis.unique_elements}
 
     # Extract dimensions for elements of arguments only
     arguments = ufl.algorithms.extract_arguments(expr)