weston: Delete four patches that are no longer used

weston: Delete four patches that are no longer used

The following four patches are submitted in
https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/27257
to fix a potential memory leak problem.

Now that Weston has been updated to 10.0,
the original memory leak problem has been solved,
and the following four patches are no longer required

Bug-AGL: SPEC-4438

Signed-off-by: duerpei <duep.fnst@fujitsu.com>
Change-Id: Ibe4191a2a902ddac9f9a32d4f6239ae5761894a4
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/27665
Reviewed-by: Marius Vlad <marius.vlad@collabora.com>
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Tested-by: Jenkins Job builder account