Remove workaround for DD1 SW reset for XIVE

Change-Id: I909fd22a26be6e2ff5b63f63b3f6dc0237bce778
Original-Change-Id: Ic2cf3510350aa00c0641cc910824000bf58d8276
RTC: 177741
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/52512
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>
Reviewed-by: RAJA DAS <rajadas2@in.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/55618
CI-Ready: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Tested-by: Daniel M. Crowell <dcrowell@us.ibm.com>

src/import/chips/p9/procedures/xml/attribute_info/chip_ec_attributes.xml

@@ -6123,24 +6123,6 @@
       </chip>
     </chipEcFeature>
   </attribute>
- <!-- ********************************************************************* -->
-  <attribute>
-    <id>ATTR_CHIP_EC_FEATURE_USE_XIVE_HW_RESET</id>
-    <targetType>TARGET_TYPE_PROC_CHIP</targetType>
-    <description>
-        HW reset for XIVE unit is not working in DD1 or DD2. Potentially
-        could be fixed in the future
-    </description>
-    <chipEcFeature>
-      <chip>
-        <name>ENUM_ATTR_NAME_NIMBUS</name>
-        <ec>
-          <value>0x20</value>
-          <test>GREATER_THAN</test>
-        </ec>
-      </chip>
-    </chipEcFeature>
-  </attribute>
  <!-- ********************************************************************* -->
   <attribute>
     <id>ATTR_CHIP_EC_FEATURE_POUNDV_VALIDATE_DISABLE</id>