Remove VOEvent Retraction param from What section

gracedb/events/buildVOEvent.py

@@ -195,12 +195,6 @@ def buildVOEvent(event, serial_number, voevent_type, request=None, skymap_filena
         value = alert_type.capitalize(),
         Description=["VOEvent alert type"]))
 
-    w.add_Param(Param(name="Retraction",
-        dataType="int",
-        ucd="meta.number",
-        value=(1 if voevent_type == 'retraction' else 0),
-        Description=["Set to 1 if the event is retracted, otherwise 0"]))
-
     # Shib protected event page
     # Whether the event is a hardware injection or not
     w.add_Param(Param(name="HardwareInj",

gracedb/superevents/buildVOEvent.py

@@ -189,12 +189,6 @@ def construct_voevent_file(superevent, voevent, request=None,
         value = alert_type.capitalize(),
         Description=["VOEvent alert type"]))
 
-    w.add_Param(Param(name="Retraction",
-        dataType="int",
-        ucd="meta.number",
-        value=(1 if voevent_type == 'retraction' else 0),
-        Description=["Set to 1 if the event is retracted, otherwise 0"]))
-
     # Whether the event is a hardware injection or not
     w.add_Param(Param(name="HardwareInj",
         dataType="int",