Cleanup: animation, remove `BONE_UNKEYED` flag

Remove the `BONE_UNKEYED` flag. It was only written (set/cleared) but
never actually read.

Also remove `framechange_poses_clear_unkeyed()` as its only function was
to clear the `BONE_UNKEYED` flag. It wasn't used anywhere either.

The only code that used the flag was the `extract_pose_from_action()`,
which was removed in 2869ce6cfab3aa4ff471bef6e49ac6fe15426247 (2009).

No functional changes.

1 files changed, 0 insertions, 11 deletions

diff --git a/source/blender/editors/armature/pose_lib.c b/source/blender/editors/armature/pose_lib.c
index dd90f9f2cc3..21fcbf8886b 100644
--- a/source/blender/editors/armature/pose_lib.c
+++ b/source/blender/editors/armature/pose_lib.c
@@ -1108,17 +1108,6 @@ static void poselib_keytag_pose(bContext *C, Scene *scene, tPoseLib_PreviewData
         if (autokey) {
           /* Add data-source override for the PoseChannel, to be used later. */
           ANIM_relative_keyingset_add_source(&dsources, &pld->ob->id, &RNA_PoseBone, pchan);
-
-          /* clear any unkeyed tags */
-          if (pchan->bone) {
-            pchan->bone->flag &= ~BONE_UNKEYED;
-          }
-        }
-        else {
-          /* add unkeyed tags */
-          if (pchan->bone) {
-            pchan->bone->flag |= BONE_UNKEYED;
-          }
         }
       }
     }