x86: Remove i386-*-kaos* and i386-*-chaos targets

x86: Remove i386-*-kaos* and i386-*-chaos targets

Remove i386-*-kaos* and i386-*-chaos targets since they are no longer
supported by config.sub:

$ .../config.sub i386-kaos
Invalid configuration `i386-kaos': system `kaos' not recognized
$ .../config.sub i386-chaos
Invalid configuration `i386-chaos': system `chaos' not recognized
$

bfd/

	* config.bfd: Remove i[3-7]86-*-kaos* and i[3-7]86-*-chaos targets.

gas/

	* configure.tgt: Remove i386-*-kaos* and i386-*-chaos targets.
	* testsuite/gas/i386/i386.exp: Remove *-*-caos* and "*-*-kaos*
	check.

ld/

	* Makefile.am (ALL_EMULATION_SOURCES): Remove eelf_i386_chaos.c.
	(eelf_i386_chaos.c): Removed.
	* Makefile.in: Regenerated.
	* configure.tgt: Remove i[3-7]86-*-kaos*.
	* emulparams/elf_i386_chaos.sh: Removed.