[Bug cobol/125726] [17 regression] cobol1: warning: command-line option '-imultilib .' is valid for C/C++/D/Fortran/Modula-2/ObjC/ObjC++ but not for Cobol [r17-1346-gd70dbee952cd6a]

[schwab--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125726

--- Comment #1 from Andreas Schwab <sch...@linux-m68k.org> ---
Actually -imultiarch is in common.opt, so only -imultilib needs to be handled
by cobol1.