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, 2 insertions, 2 deletions

diff --git a/source/blender/editors/armature/pose_slide.c b/source/blender/editors/armature/pose_slide.c
index 0efa32ec63a..38c99c2ef60 100644
--- a/source/blender/editors/armature/pose_slide.c
+++ b/source/blender/editors/armature/pose_slide.c
@@ -2061,12 +2061,12 @@ static int pose_propagate_exec(bContext *C, wmOperator *op)
     if (mode == POSE_PROPAGATE_SMART_HOLDS) {
       /* We store in endFrame the end frame of the "long keyframe" (i.e. a held value) starting
        * from the keyframe that occurs after the current frame. */
-      modeData.end_frame = pose_propagate_get_boneHoldEndFrame(pfl, (float)CFRA);
+      modeData.end_frame = pose_propagate_get_boneHoldEndFrame(pfl, (float)scene->r.cfra);
     }
 
     /* Go through propagating pose to keyframes, curve by curve. */
     for (ld = pfl->fcurves.first; ld; ld = ld->next) {
-      pose_propagate_fcurve(op, pfl->ob, (FCurve *)ld->data, (float)CFRA, modeData);
+      pose_propagate_fcurve(op, pfl->ob, (FCurve *)ld->data, (float)scene->r.cfra, modeData);
     }
   }