Animation: Remove depsgraph argument from direct keyframing

It was used to access evaluated object and pose and was done prior
to implementation of flushing values back to original data for an
active dependency graph.

Removing the argument allows to simplify API and solve issues with
accessing missing dependency graph on redo.

source/blender/python/intern/bpy_rna_anim.c

@@ -337,7 +337,6 @@ PyObject *pyrna_struct_keyframe_insert(BPy_StructRNA *self, PyObject *args, PyOb
      * strips themselves. These are stored separately or else the properties will
      * not have any effect.
      */
-    struct Depsgraph *depsgraph = CTX_data_depsgraph(BPy_GetContext());
     ReportList reports;
     short result = 0;
 
@@ -357,8 +356,7 @@ PyObject *pyrna_struct_keyframe_insert(BPy_StructRNA *self, PyObject *args, PyOb
       NlaStrip *strip = (NlaStrip *)ptr.data;
       FCurve *fcu = list_find_fcurve(&strip->fcurves, RNA_property_identifier(prop), index);
 
-      result = insert_keyframe_direct(
-          depsgraph, &reports, ptr, prop, fcu, cfra, keytype, NULL, options);
+      result = insert_keyframe_direct(&reports, ptr, prop, fcu, cfra, keytype, NULL, options);
     }
     else {
       BKE_reportf(&reports, RPT_ERROR, "Could not resolve path (%s)", path_full);