[binutils-gdb] Remove tandem support

[sergiodj+buildbot@sergiodj.net]

*** TEST RESULTS FOR COMMIT de96689e03235bfd65a33704a9d398cb666140f4 ***

Author: Alan Modra <amodra@gmail.com>
Branch: master
Commit: de96689e03235bfd65a33704a9d398cb666140f4

Remove tandem support

bfd/
	* config.bfd: Remove tandem support.
ld/
	* Makefile.am: Remove tandem support.
	* configure.tgt: Likewise.
	* emulparams/st2000.sh: Delete.
	* scripttempl/st2000.sc: Delete.
	* Makefile.in: Regenerate.
	* po/BLD-POTFILES.in: Regenerate.