Alexandre Julliard : configure: Remove some no longer needed configure checks.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 21cec48570d4f358312409c778675c2d8502f272
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=21cec48570d4f358312409c778675c2d8502f272

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Fri Sep  3 14:54:16 2021 +0200

configure: Remove some no longer needed configure checks.

Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 configure             |  19 ++--------
 configure.ac          |  12 +-----
 include/config.h.in   |  24 ------------
 include/wine/port.h   |  24 ------------
 libs/port/Makefile.in |   3 --
 libs/port/poll.c      | 101 --------------------------------------------------
 libs/port/pread.c     |  50 -------------------------
 libs/port/pwrite.c    |  50 -------------------------
 8 files changed, 5 insertions(+), 278 deletions(-)

Diff:   https://source.winehq.org/git/wine.git/?a=commitdiff;h=21cec48570d4f358312409c778675c2d8502f272