remove no_export tag from DMI_REFCLOCK_SWIZZLE as it needs to come fr…

…om MRW

Change-Id: I14afc2961db6a487123264be15b57e70157dc2ca
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/48536
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: Martin Gloff <mgloff@us.ibm.com>
Reviewed-by: Corey V. Swenson <cswenson@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: William G. Hoffa <wghoffa@us.ibm.com>

src/usr/targeting/common/xmltohb/hb_customized_attrs.xml

@@ -563,11 +563,6 @@
           <no_export/>
     </attribute>
 
-    <attribute>
-          <id>ATTR_DMI_REFCLOCK_SWIZZLE</id>
-          <no_export/>
-    </attribute>
-
     <attribute>
           <id>ATTR_MRW_MEM_SENSOR_CACHE_ADDR_MAP</id>
           <no_export/>