* term.c: Make symbols static if they're not exported.

* term.c: Make symbols static if they're not exported.

(tty_turn_off_highlight, get_tty_terminal, max_frame_cols):
(max_frame_lines, tty_set_terminal_modes):
(tty_reset_terminal_modes, tty_turn_off_highlight):
(get_tty_terminal): Now static.
(term_mouse_moveto): Do not define if HAVE_WINDOW_SYSTEM.
* termhooks.h (term_mouse_moveto): Do not declare if
HAVE_WINDOW_SYSTEMM.
* dispextern.h (tty_set_terminal_modes, tty_reset_terminal_modes):
(tty_turn_off_highlight, get_tty_terminal): Remove decls.