[Bug target/91041] obsolete arm-pe support in arm backend

[wilson at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91041

--- Comment #1 from Jim Wilson <wilson at gcc dot gnu.org> ---
FYI I noticed this while trying to answer a question on gcc-help, otherwise I'm
not doing any arm work at present.