Removed Kingston DIMM voltage workaround

KINGSTON_1_35_VOLT value is not used anymore

Signed-off-by: Artem Senichev <a.senichev@yadro.com>
diff --git a/openpower/configs/hostboot/vesnin.config b/openpower/configs/hostboot/vesnin.config
index 4dd3cde..3aa5fba 100644
--- a/openpower/configs/hostboot/vesnin.config
+++ b/openpower/configs/hostboot/vesnin.config
@@ -38,9 +38,6 @@
 set CONSOLE
 set BMC_AST2400
 
-# Enable Kingston dimm voltage workaround
-set KINGSTON_1_35_VOLT
-
 unset DISABLE_HOSTBOOT_RUNTIME
 
 # Compile in hostboot runtime PRD