remove use of meta-virtualization

Remove meta-virtualization from any bblayer.conf.samples.  It was
originally added for the python-pyyaml and python-gevent recipes
but better maintained versions of these recipes are provided by
meta-python.

Before this can be done the python-gevent bbappend in the phosphor
layer must be removed.  The version scope was wildcarded to any version
but the patches don't apply to python-gevent_1.2.2, which becomes the
default from meta-python when meta-virt is removed.  Drop the bbappend.

Change-Id: I6658a163460e3c8e63dc7371ffff803a7b6915b5
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-evb-aspeed/meta-evb-ast2500/conf/bblayers.conf.sample b/meta-evb-aspeed/meta-evb-ast2500/conf/bblayers.conf.sample
index 8b1910b..b428881 100644
--- a/meta-evb-aspeed/meta-evb-ast2500/conf/bblayers.conf.sample
+++ b/meta-evb-aspeed/meta-evb-ast2500/conf/bblayers.conf.sample
@@ -12,7 +12,6 @@
   ##OEROOT##/import-layers/meta-openembedded/meta-networking \
   ##OEROOT##/import-layers/meta-openembedded/meta-python \
   ##OEROOT##/import-layers/meta-openembedded/meta-webserver \
-  ##OEROOT##/import-layers/meta-virtualization \
   ##OEROOT##/meta-phosphor \
   ##OEROOT##/meta-openbmc-bsp/meta-aspeed \
   ##OEROOT##/meta-openbmc-machines/meta-evb \
@@ -26,7 +25,6 @@
   ##OEROOT##/import-layers/meta-openembedded/meta-networking \
   ##OEROOT##/import-layers/meta-openembedded/meta-python \
   ##OEROOT##/import-layers/meta-openembedded/meta-webserver \
-  ##OEROOT##/import-layers/meta-virtualization \
   ##OEROOT##/meta-phosphor \
   ##OEROOT##/meta-openbmc-bsp/meta-aspeed \
   ##OEROOT##/meta-openbmc-machines/meta-evb \
diff --git a/meta-evb-nuvoton/meta-evb-npcm750/conf/bblayers.conf.sample b/meta-evb-nuvoton/meta-evb-npcm750/conf/bblayers.conf.sample
index fa35e4d..454e217 100644
--- a/meta-evb-nuvoton/meta-evb-npcm750/conf/bblayers.conf.sample
+++ b/meta-evb-nuvoton/meta-evb-npcm750/conf/bblayers.conf.sample
@@ -11,7 +11,6 @@
   ##OEROOT##/import-layers/meta-openembedded/meta-oe \
   ##OEROOT##/import-layers/meta-openembedded/meta-networking \
   ##OEROOT##/import-layers/meta-openembedded/meta-python \
-  ##OEROOT##/import-layers/meta-virtualization \
   ##OEROOT##/meta-phosphor \
   ##OEROOT##/meta-openbmc-bsp/meta-nuvoton \
   ##OEROOT##/meta-openbmc-machines/meta-evb \
@@ -24,7 +23,6 @@
   ##OEROOT##/import-layers/meta-openembedded/meta-oe \
   ##OEROOT##/import-layers/meta-openembedded/meta-networking \
   ##OEROOT##/import-layers/meta-openembedded/meta-python \
-  ##OEROOT##/import-layers/meta-virtualization \
   ##OEROOT##/meta-phosphor \
   ##OEROOT##/meta-openbmc-bsp/meta-nuvoton \
   ##OEROOT##/meta-openbmc-machines/meta-evb \
diff --git a/meta-evb-raspberrypi/conf/bblayers.conf.sample b/meta-evb-raspberrypi/conf/bblayers.conf.sample
index 03142d6..d70b2b1 100644
--- a/meta-evb-raspberrypi/conf/bblayers.conf.sample
+++ b/meta-evb-raspberrypi/conf/bblayers.conf.sample
@@ -12,7 +12,6 @@
   ##OEROOT##/import-layers/meta-openembedded/meta-networking \
   ##OEROOT##/import-layers/meta-openembedded/meta-python \
   ##OEROOT##/import-layers/meta-openembedded/meta-webserver \
-  ##OEROOT##/import-layers/meta-virtualization \
   ##OEROOT##/meta-phosphor \
   ##OEROOT##/import-layers/meta-raspberrypi \
   "
@@ -23,7 +22,6 @@
   ##OEROOT##/import-layers/meta-openembedded/meta-networking \
   ##OEROOT##/import-layers/meta-openembedded/meta-python \
   ##OEROOT##/import-layers/meta-openembedded/meta-webserver \
-  ##OEROOT##/import-layers/meta-virtualization \
   ##OEROOT##/meta-phosphor \
   ##OEROOT##/import-layers/meta-raspberrypi \
   "