fix icon4pygen (#442)

The generated wrap_run subroutines were still generating unused pointer to before fields, which leads to compile errors on newer compilers. This is cleaned up here such that the pointers are not generated.

tools/src/icon4pytools/icon4pygen/bindings/codegen/f90.py

@@ -525,29 +525,16 @@ def __post_init__(self, *args: Any, **kwargs: Any) -> None:
         param_fields = [F90Field(name=field.name) for field in self.all_fields] + [
             F90Field(name=name) for name in _DOMAIN_ARGS
         ]
-        bind_fields = (
-            [
-                F90TypedField(
-                    name=field.name,
-                    dtype=field.renderer.render_ctype("f90"),
-                    dims=field.renderer.render_ranked_dim_string(),
-                )
-                for field in self.all_fields
-            ]
-            + [
-                F90TypedField(
-                    name=field.name,
-                    suffix="before",
-                    dtype=field.renderer.render_ctype("f90"),
-                    dims=field.renderer.render_ranked_dim_string(),
-                )
-                for field in self.out_fields
-            ]
-            + [
-                F90TypedField(name=name, dtype="integer(c_int)", dims="value")
-                for name in _DOMAIN_ARGS
-            ]
-        )
+        bind_fields = [
+            F90TypedField(
+                name=field.name,
+                dtype=field.renderer.render_ctype("f90"),
+                dims=field.renderer.render_ranked_dim_string(),
+            )
+            for field in self.all_fields
+        ] + [
+            F90TypedField(name=name, dtype="integer(c_int)", dims="value") for name in _DOMAIN_ARGS
+        ]
         k_sizes_fields = [
             F90TypedField(name=field.name, suffix=s, dtype="integer")
             for s in ["k_size"]