[Bug target/59968] Unused BT patterns

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59968

--- Comment #20 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think most of these have been fixed.  For an example comment #19 was fixed in
r12-1525