qulogic/libgnt

Remove unused header checks.

2016-08-20, Elliott Sales de Andrade
f2beced1f8c2
Remove unused header checks.

* arpa/nameser_compat.h appears unused.
* sys/time.h should be fine on all systems, according to AC_HEADER_TIME,
but it's not used anyway.
* regex.h is not used.
* sys/utsname.h appears twice.
#include <ncurses.h>
int main()
{
int ch;
initscr();
noecho();
cbreak();
refresh();
WINDOW *win = newpad(20, 30);
box(win, 0, 0);
prefresh(win, 0, 0, 0, 0, 19, 29);
doupdate();
while ((ch = getch())) {
printw("%d ", ch);
refresh();
}
endwin();
return 0;
}