- remove recently added BM_mesh_select_flush_strip(), functions purpose wasn't clear.
- add BM_mesh_elem_hflag_disable_test(), BM_mesh_elem_hflag_enable_test()
to match existing BM_mesh_elem_hflag_enable/disable_all(), these take a hflag to test before editing each element.
This replaces the need for BM_mesh_select_flush_strip().