.checkpackageignore: remove fixed board/qemu/post-image.sh

Commit b32d7c99 fixed the shellcheck errors in board/qemu/post-image.sh,
but forgot to remove it from .checkpackageignore, leading to "Shellcheck
was expected to fail" errors.

Re-generate .checkpackageignore.

Fixes: b32d7c99c64d6dcb7a68036a7abfa86b8b558627

Signed-off-by: Arnout Vandecappelle <arnout@mind.be>

.checkpackageignore

@@ -59,7 +59,6 @@ board/orangepi/orangepi-one-plus/post-build.sh Shellcheck
 board/pine64/rock64/post-build.sh Shellcheck
 board/pine64/rockpro64/post-build.sh Shellcheck
 board/qemu/aarch64-sbsa/assemble-flash-images Shellcheck
-board/qemu/post-image.sh Shellcheck
 board/qemu/x86/post-build.sh Shellcheck
 board/qemu/x86_64/post-build.sh Shellcheck
 board/radxa/rockpi-n8/post-build.sh Shellcheck