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-palmetto/conf/bblayers.conf.sample b/meta-palmetto/conf/bblayers.conf.sample
index 89d3549..9be37e6 100644
--- a/meta-palmetto/conf/bblayers.conf.sample
+++ b/meta-palmetto/conf/bblayers.conf.sample
@@ -13,7 +13,6 @@
   ##OEROOT##/import-layers/meta-openembedded/meta-perl \
   ##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-openpower \
@@ -28,7 +27,6 @@
   ##OEROOT##/import-layers/meta-openembedded/meta-perl \
   ##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-openpower \
diff --git a/meta-romulus/conf/bblayers.conf.sample b/meta-romulus/conf/bblayers.conf.sample
index b06f6a2..5751320 100644
--- a/meta-romulus/conf/bblayers.conf.sample
+++ b/meta-romulus/conf/bblayers.conf.sample
@@ -13,7 +13,6 @@
   ##OEROOT##/import-layers/meta-openembedded/meta-perl \
   ##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-openpower \
@@ -28,7 +27,6 @@
   ##OEROOT##/import-layers/meta-openembedded/meta-perl \
   ##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-openpower \
diff --git a/meta-witherspoon/conf/bblayers.conf.sample b/meta-witherspoon/conf/bblayers.conf.sample
index 18a97de..aa8a2b3 100644
--- a/meta-witherspoon/conf/bblayers.conf.sample
+++ b/meta-witherspoon/conf/bblayers.conf.sample
@@ -13,7 +13,6 @@
   ##OEROOT##/import-layers/meta-openembedded/meta-perl \
   ##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-openpower \
@@ -28,7 +27,6 @@
   ##OEROOT##/import-layers/meta-openembedded/meta-perl \
   ##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-openpower \