Remove wspoon P9 VCS Workaround from boot path

The level of hardware that required it is no longer
supported by the hostboot firmware anyway so systems
with those processors cannot boot up.

A future commit will remove the newly unused files.

Change-Id: Ifb92b697bbf3f7bdfc4fa0a1c6e296f7d9ec3ba6
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/meta-witherspoon/conf/machine/witherspoon.conf b/meta-witherspoon/conf/machine/witherspoon.conf
index 4878278..aead549 100644
--- a/meta-witherspoon/conf/machine/witherspoon.conf
+++ b/meta-witherspoon/conf/machine/witherspoon.conf
@@ -7,7 +7,7 @@
 
 OBMC_POWER_SUPPLY_INSTANCES = "0 1"
 
-PREFERRED_PROVIDER_virtual/p9-vcs-workaround = 'vcs-pre-post'
+PREFERRED_PROVIDER_virtual/p9-vcs-workaround = ''
 
 require conf/machine/include/ast2500.inc
 require conf/machine/include/obmc-bsp-common.inc