Revert "Move verify_vc_kbmode() to terminal-util.c as vt_verify_kbmode()"

This reverts commit bb5ac84d79.

src/basic/terminal-util.c

@@ -1260,23 +1260,6 @@ int vt_default_utf8(void) {
         return parse_boolean(b);
 }
 
-int vt_verify_kbmode(int fd) {
-        int curr_mode;
-
-        /*
-         * Make sure we only adjust consoles in K_XLATE or K_UNICODE mode.
-         * Otherwise we would (likely) interfere with X11's processing of the
-         * key events.
-         *
-         * http://lists.freedesktop.org/archives/systemd-devel/2013-February/008573.html
-         */
-
-        if (ioctl(fd, KDGKBMODE, &curr_mode) < 0)
-                return -errno;
-
-        return IN_SET(curr_mode, K_XLATE, K_UNICODE) ? 0 : -EBUSY;
-}
-
 int vt_reset_keyboard(int fd) {
         int kb;
 

src/basic/terminal-util.h

@@ -158,7 +158,6 @@ int openpt_allocate_in_namespace(pid_t pid, int flags, char **ret_slave);
 int open_terminal_in_namespace(pid_t pid, const char *name, int mode);
 
 int vt_default_utf8(void);
-int vt_verify_kbmode(int fd);
 int vt_reset_keyboard(int fd);
 int vt_restore(int fd);
 int vt_release(int fd, bool restore_vt);