diff --git a/plugins/sudoers/callbacks.c b/plugins/sudoers/callbacks.c
index 422ee568b..3894f814d 100644
--- a/plugins/sudoers/callbacks.c
+++ b/plugins/sudoers/callbacks.c
@@ -457,82 +457,6 @@ cb_log_output(const char *file, int line, int column,
     debug_return_bool(true);
 }
 
-bool
-cb_maxseq(const char *file, int line, int column,
-    const union sudo_defs_val *sd_un, int op)
-{
-    const char *errstr;
-    unsigned int value;
-    debug_decl(cb_maxseq, SUDOERS_DEBUG_UTIL);
-
-    value = (unsigned int)sudo_strtonum(sd_un->str, 0, SESSID_MAX, &errstr);
-    if (errstr != NULL) {
-        if (errno != ERANGE) {
-            sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
-                "bad maxseq: %s: %s", sd_un->str, errstr);
-            debug_return_bool(false);
-        }
-        /* Out of range, clamp to SESSID_MAX as documented. */
-        value = SESSID_MAX;
-    }
-    iolog_set_maxseq(value);
-    debug_return_bool(true);
-}
-
-bool
-cb_iolog_user(const char *file, int line, int column,
-    const union sudo_defs_val *sd_un, int op)
-{
-    const char *name = sd_un->str;
-    struct passwd *pw;
-    debug_decl(cb_iolog_user, SUDOERS_DEBUG_UTIL);
-
-    /* NULL name means reset to default. */
-    if (name == NULL) {
-	iolog_set_owner(ROOT_UID, ROOT_GID);
-    } else {
-	if ((pw = sudo_getpwnam(name)) == NULL) {
-	    log_warningx(SLOG_SEND_MAIL, N_("unknown user %s"), name);
-	    debug_return_bool(false);
-	}
-	iolog_set_owner(pw->pw_uid, pw->pw_gid);
-	sudo_pw_delref(pw);
-    }
-
-    debug_return_bool(true);
-}
-
-bool
-cb_iolog_group(const char *file, int line, int column,
-    const union sudo_defs_val *sd_un, int op)
-{
-    const char *name = sd_un->str;
-    struct group *gr;
-    debug_decl(cb_iolog_group, SUDOERS_DEBUG_UTIL);
-
-    /* NULL name means reset to default. */
-    if (name == NULL) {
-	iolog_set_gid(ROOT_GID);
-    } else {
-	if ((gr = sudo_getgrnam(name)) == NULL) {
-	    log_warningx(SLOG_SEND_MAIL, N_("unknown group %s"), name);
-	    debug_return_bool(false);
-	}
-	iolog_set_gid(gr->gr_gid);
-	sudo_gr_delref(gr);
-    }
-
-    debug_return_bool(true);
-}
-
-bool
-cb_iolog_mode(const char *file, int line, int column,
-    const union sudo_defs_val *sd_un, int op)
-{
-    iolog_set_mode(sd_un->mode);
-    return true;
-}
-
 /*
  * Set parser Defaults callbacks.
  * We do this here instead in def_data.in so we don't have to