docs: remove qemu-upstream_howto_use_it.markdown

QEMU upstream has been the default for several releases. The only
setting described in that document is no longer required.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Ian Jackson <ian.jackson@eu.citrix.com>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Keir Fraser <keir@xen.org>
Cc: Tim Deegan <tim@xen.org>
Cc: Anthony Perard <anthony.perard@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/docs/misc/qemu-upstream_howto_use_it.markdown b/docs/misc/qemu-upstream_howto_use_it.markdown
deleted file mode 100644 (file)
index 8370fac..0000000
--- a/docs/misc/qemu-upstream_howto_use_it.markdown
+++ /dev/null
@@ -1,12 +0,0 @@
-Using Upstream QEMU with Xen
-============================
-
-If you want to build with the QEMU unstable tree, follow the [QEMU
-Upstream](http://wiki.xen.org/wiki/QEMU_Upstream) wiki page.
-
-Otherwise, QEMU/SeaBIOS is now integrated into the build system, so you just
-have to specify the device model version in an `xl` config file:
-
-    device_model_version = 'qemu-xen'
-
-The version of QEMU used in the build system is the last release of QEMU.