[binutils-gdb] gdbserver/xtensa: drop xtensa_usrregs_info

[sergiodj+buildbot at redhat dot com]

*** TEST RESULTS FOR COMMIT deb44829ecc1dd38275af0fcf91acd319e227a89 ***

Author: Max Filippov <jcmvbkbc@gmail.com>
Branch: master
Commit: deb44829ecc1dd38275af0fcf91acd319e227a89

gdbserver/xtensa: drop xtensa_usrregs_info
xtensa_usrregs_info refers to undefined variables xtensa_num_regs and
xtensa_regmap. Drop xtensa_usrregs_info and replace pointer to usrregs
in regs_info with NULL since all registers are read/set through regsets.

2015-04-17  Max Filippov  <jcmvbkbc@gmail.com>
gdb/gdbserver/
	* linux-xtensa-low.c (xtensa_usrregs_info): Remove.
	(regs_info): Replace usrregs pointer with NULL.