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, 1 insertions, 1 deletions

diff --git a/source/blender/editors/space_view3d/view3d_draw.c b/source/blender/editors/space_view3d/view3d_draw.c
index b9e4c19295d..5405867be56 100644
--- a/source/blender/editors/space_view3d/view3d_draw.c
+++ b/source/blender/editors/space_view3d/view3d_draw.c
@@ -1294,7 +1294,7 @@ static void draw_viewport_name(ARegion *region, View3D *v3d, int xoffset, int *y
 static void draw_selected_name(
     Scene *scene, ViewLayer *view_layer, Object *ob, int xoffset, int *yoffset)
 {
-  const int cfra = CFRA;
+  const int cfra = scene->r.cfra;
   const char *msg_pin = " (Pinned)";
   const char *msg_sep = " : ";