* config/arc/arc.h, config/arm/arm.h, config/frv/frv.h,

	config/h8300/h8300.h, config/i386/i386.h, config/i860/i860.h,
	config/iq2000/iq2000.h, config/m32r/m32r.h,
	config/pdp11/pdp11.h, config/sparc/sparc.h,
	config/xtensa/xtensa.h: Remove commented-out or useless
	definitions of CASE_VECTOR_PC_RELATIVE.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@78091 138bc75d-0d04-0410-961f-82ee72b054a4