Remove sendto_kdc debugging code

It's a lot of code, and trace logging should cover most of the cases
where it's useful.

src/lib/apputils/net-server.c

@@ -1215,18 +1215,13 @@ loop_setup_routing_socket(verto_ctx *ctx, void *handle, const char *progname)
     return 0;
 }
 
-/* XXX */
-extern void (*krb5int_sendtokdc_debug_handler)(const void*, size_t);
-
 krb5_error_code
 loop_setup_network(verto_ctx *ctx, void *handle, const char *prog)
 {
     struct socksetup setup_data;
     verto_ev *ev;
     int i;
 
-    krb5int_sendtokdc_debug_handler = klog_handler;
-
     /* Close any open connections. */
     FOREACH_ELT(events, i, ev)
         verto_del(ev);

src/lib/krb5/libkrb5.exports

@@ -605,7 +605,6 @@ krb5int_get_authdata_containee_types
 krb5int_init_context_kdc
 krb5int_initialize_library
 krb5int_parse_enctype_list
-krb5int_sendtokdc_debug_handler
 krb5int_trace
 profile_abandon
 profile_add_relation

src/lib/krb5/os/locate_kdc.c

@@ -114,13 +114,6 @@ Tprintf(const char *fmt, ...)
 #endif
 }
 
-#if 0
-extern void krb5int_debug_fprint(const char *, ...);
-#define dprint krb5int_debug_fprint
-#else
-static inline void dprint(const char *fmt, ...) { }
-#endif
-
 /* Make room for a new server entry in list and return a pointer to the new
  * entry.  (Do not increment list->nservers.) */
 static struct server_entry *

src/lib/krb5/os/os-proto.h

@@ -94,8 +94,6 @@ krb5_error_code krb5_make_full_ipaddr(krb5_context,
 krb5_error_code krb5_try_realm_txt_rr(const char *, const char *,
                                       char **realm);
 
-void krb5int_debug_fprint (const char *fmt, ...);
-
 int _krb5_use_dns_realm (krb5_context);
 int _krb5_use_dns_kdc (krb5_context);
 int _krb5_conf_boolean (const char *);