Cleanup: Remove scene frame macros (`CFRA` et al.)

Removes the following macros for scene/render frame values:
- `CFRA`
- `SUBFRA`
- `SFRA`
- `EFRA`

These macros don't add much, other than saving a few characters when typing.
It's not immediately clear what they refer to, they just hide what they
actually access. Just be explicit and clear about that.
Plus these macros gave read and write access to the variables, so eyesores like
this would be done (eyesore because it looks like assigning to a constant):
```
CFRA = some_frame_nbr;
```

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D15311

1 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/editors/armature/pose_transform.c b/source/blender/editors/armature/pose_transform.c
index f0b0218d7e0..cfc6b0b6b6e 100644
--- a/source/blender/editors/armature/pose_transform.c
+++ b/source/blender/editors/armature/pose_transform.c
@@ -1201,7 +1201,7 @@ static int pose_clear_transform_generic_exec(bContext *C,
         KeyingSet *ks = ANIM_get_keyingset_for_autokeying(scene, default_ksName);
 
         /* insert keyframes */
-        ANIM_apply_keyingset(C, &dsources, NULL, ks, MODIFYKEY_MODE_INSERT, (float)CFRA);
+        ANIM_apply_keyingset(C, &dsources, NULL, ks, MODIFYKEY_MODE_INSERT, (float)scene->r.cfra);
 
         /* now recalculate paths */
         if (ob_iter->pose->avs.path_bakeflag & MOTIONPATH_BAKE_HAS_PATHS) {
@@ -1343,8 +1343,8 @@ static int pose_clear_user_transforms_exec(bContext *C, wmOperator *op)
   View3D *v3d = CTX_wm_view3d(C);
   Scene *scene = CTX_data_scene(C);
   Depsgraph *depsgraph = CTX_data_depsgraph_pointer(C);
-  const AnimationEvalContext anim_eval_context = BKE_animsys_eval_context_construct(depsgraph,
-                                                                                    (float)CFRA);
+  const AnimationEvalContext anim_eval_context = BKE_animsys_eval_context_construct(
+      depsgraph, (float)scene->r.cfra);
   const bool only_select = RNA_boolean_get(op->ptr, "only_selected");
 
   FOREACH_OBJECT_IN_MODE_BEGIN (view_layer, v3d, OB_ARMATURE, OB_MODE_POSE, ob) {