Remove support for vax-openbsd

This removes the support for vax-openbsd which has been discontinued
after the OpenBSD 5.9 release and which has no supported gas or GNU ld
configuration [anymore].  In particular this target does only support
STABS debuginfo generation.

2021-09-13  Richard Biener  <rguenther@suse.de>

	* config.gcc: Remove vax-*-openbsd* configuration.

contrib/
	* config-list.mk: Remove vax-openbsd.

contrib/config-list.mk

@@ -96,7 +96,7 @@ LIST = aarch64-elf aarch64-linux-gnu aarch64-rtems \
   tilegx-linux-gnuOPT-enable-obsolete tilegxbe-linux-gnuOPT-enable-obsolete \
   tilepro-linux-gnuOPT-enable-obsolete \
   v850e1-elf v850e-elf v850-elf v850-rtems vax-linux-gnu \
-  vax-netbsdelf vax-openbsd visium-elf x86_64-apple-darwin \
+  vax-netbsdelf visium-elf x86_64-apple-darwin \
   x86_64-pc-linux-gnuOPT-with-fpmath=avx \
   x86_64-elfOPT-with-fpmath=sse x86_64-freebsd6 x86_64-netbsd \
   x86_64-w64-mingw32 \

gcc/config.gcc

@@ -3511,11 +3511,6 @@ vax-*-netbsdelf*)
 	extra_options="${extra_options} netbsd.opt netbsd-elf.opt vax/elf.opt"
 	tm_defines="${tm_defines} CHAR_FAST8=1 SHORT_FAST16=1"
 	;;
-vax-*-openbsd*)
-	tm_file="vax/vax.h vax/openbsd1.h openbsd.h openbsd-stdint.h openbsd-libpthread.h vax/openbsd.h"
-	extra_options="${extra_options} openbsd.opt"
-	use_collect2=yes
-	;;
 visium-*-elf*)
 	tm_file="dbxelf.h elfos.h ${tm_file} visium/elf.h newlib-stdint.h"
 	tmake_file="visium/t-visium visium/t-crtstuff"