Avoid some unnecessary stdio.h includes

* src/atimer.c, src/callproc.c, src/coding.c, src/dired.c, src/eval.c:
* src/fringe.c, src/ftcrfont.c, src/ftfont.c, src/ftxfont.c:
* src/gfilenotify.c, src/indent.c, src/kqueue.c, src/menu.c:
* src/scroll.c, src/terminal.c, src/unexcoff.c, src/window.c:
* src/xfont.c, src/xftfont.c:
Do not include stdio.h since it is unused.
2 jobs for master in 56 minutes and 23 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
failed #2438
test-all

00:56:23

passed #2439
test-filenotify-gio

00:40:46

 
Name Stage Failure
failed
test-all Test
Makefile:318: recipe for target 'check-doit' failed
make[2]: *** [check-doit] Error 1
make[2]: Leaving directory '/builds/emacs/emacs/test'
Makefile:293: recipe for target 'check-expensive' failed
make[1]: *** [check-expensive] Error 2
make[1]: Leaving directory '/builds/emacs/emacs/test'
Makefile:959: recipe for target 'check-expensive' failed
make: *** [check-expensive] Error 2
ERROR: Job failed: exit code 1