* target.h (target_ops): Removed to_core_file_to_sym_file vector

* target.h (target_ops): Removed to_core_file_to_sym_file vector
function.
* corelow.c (core_ops): Updated for above change.
* gnu-nat.c (core_ops): Likewise.
* inftarg.c (child_ops): Likewise.
* monitor.c (monitor_ops): Likewise.
* ppc-bdm.c (bdm_ppc_ops): Likewise.
* remote-adapt.c (adapt_ops): Likewise.
* remote-bug.c (bug_ops): Likewise.
* remote-e7000.c (e7000_ops): Likewise.
* remote-eb.c (eb_ops): Likewise.
* remote-es.c (es1800_ops, es1800_child_ops): Likewise.
* remote-mm.c (mm_ops): Likewise.
* remote-nindy.c (nindy_ops): Likewise.
* remote-nrom.c (nrom_ops): Likewise.
* remote-os9k.c (rombug_ops): Likewise.
* remote-rdp.c (remote_rdp_ops): Likewise.
* remote-sim.c (gdbsim_ops): Likewise.
* remote-st.c (st2000_ops): Likewise.
* v850ice.c (v850ice_ops): Likewise.
* target.c (cleanup_target): Likewise
(update_current_target): Likewise.
(setup_target_debug): Likewise
(debug_to_core_file_to_sym_file): Removed.

* corefile.c (core_file_command) [HPUXHPPA]: Removed code that
sets symbol file from information obtained from the core file.
* corelow.c (core_file_to_sym_file): Removed.