[Bug c++/88136] -Wdeprecated-copy is draconian and shouldn't be in -Wall

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88136

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
We've been there before with -Wexpansion-to-defined though.