meta-romulus: Remove vcs workaround

Romulus uses CPLD trigger for vcs workaround and it is not needed
anymore for DD2.0 CPU.

Change-Id: I21b3c15f81b1b7be9aaab03f5f951731fc686c38
Signed-off-by: Lei YU <mine260309@gmail.com>
diff --git a/meta-romulus/conf/machine/romulus.conf b/meta-romulus/conf/machine/romulus.conf
index 06572a8..eabb756 100644
--- a/meta-romulus/conf/machine/romulus.conf
+++ b/meta-romulus/conf/machine/romulus.conf
@@ -3,7 +3,7 @@
 
 UBOOT_MACHINE = "ast_g5_ncsi_config"
 
-PREFERRED_PROVIDER_virtual/p9-vcs-workaround = 'cpld-trigger'
+PREFERRED_PROVIDER_virtual/p9-vcs-workaround = ''
 
 require conf/machine/include/ast2500.inc
 require conf/machine/include/obmc-bsp-common.inc