Revert "qemu: enable linux-io-uring"

This reverts commit 90fb1e98.

component/liburing/buildout.cfg

-[buildout]
-parts =
-  liburing
-
-[liburing]
-recipe = slapos.recipe.cmmi
-shared = true
-url = https://github.com/axboe/liburing/archive/refs/tags/liburing-2.0.tar.gz
-md5sum = 022bb540e8ab5c9916609145f020926f

component/qemu-kvm/buildout.cfg

@@ -7,7 +7,6 @@ extends =
   ../libcap/buildout.cfg
   ../libcap-ng/buildout.cfg
   ../libpng/buildout.cfg
-  ../liburing/buildout.cfg
   ../libuuid/buildout.cfg
   ../meson/buildout.cfg
   ../ncurses/buildout.cfg
@@ -43,7 +42,6 @@ configure-options =
   --enable-gnutls
   --enable-kvm
   --enable-linux-aio
-  --enable-linux-io-uring
   --enable-virtfs
   --disable-docs
   --enable-curses
@@ -52,10 +50,10 @@ configure-options =
   --disable-vnc-jpeg
   --disable-werror
 environment =
-  CFLAGS=-I${gettext:location}/include -I${libaio:location}/include -I${liburing:location}/include -I${libcap-ng:location}/include
-  LDFLAGS=-L${gettext:location}/lib -L${libaio:location}/lib -L${libcap-ng:location}/lib -Wl,-rpath=${libcap-ng:location}/lib -Wl,-rpath=${glib:location}/lib -Wl,-rpath=${gnutls:location}/lib -Wl,-rpath=${nettle:location}/lib -Wl,-rpath=${pixman:location}/lib -Wl,-rpath=${zlib:location}/lib -Wl,-rpath=${gettext:location}/lib -Wl,-rpath=${libpng:location}/lib -Wl,-rpath=${libaio:location}/lib -Wl,-rpath=${liburing:location}/lib -Wl,-rpath=${libcap-ng:location}/lib
+  CFLAGS=-I${gettext:location}/include -I${libaio:location}/include -I${libcap-ng:location}/include
+  LDFLAGS=-L${gettext:location}/lib -L${libaio:location}/lib -L${libcap-ng:location}/lib -Wl,-rpath=${libcap-ng:location}/lib -Wl,-rpath=${glib:location}/lib -Wl,-rpath=${gnutls:location}/lib -Wl,-rpath=${nettle:location}/lib -Wl,-rpath=${pixman:location}/lib -Wl,-rpath=${zlib:location}/lib -Wl,-rpath=${gettext:location}/lib -Wl,-rpath=${libpng:location}/lib -Wl,-rpath=${libaio:location}/lib -Wl,-rpath=${libcap-ng:location}/lib
   PATH=${pkgconfig:location}/bin:${bzip2:location}/bin:%(PATH)s
-  PKG_CONFIG_PATH=${glib:location}/lib/pkgconfig:${gnutls:location}/lib/pkgconfig:${gnutls:pkg-config-path}:${libpng:location}/lib/pkgconfig:${liburing:location}/lib/pkgconfig:${ncurses:location}/lib/pkgconfig:${pcre:location}/lib/pkgconfig:${pixman:location}/lib/pkgconfig
+  PKG_CONFIG_PATH=${glib:location}/lib/pkgconfig:${gnutls:location}/lib/pkgconfig:${gnutls:pkg-config-path}:${libpng:location}/lib/pkgconfig:${ncurses:location}/lib/pkgconfig:${pcre:location}/lib/pkgconfig:${pixman:location}/lib/pkgconfig
 
 [qemu:sys.version_info < (3,6)]
 environment +=