remove ++da:jo UTC json parser

arvo/zuse.hoon

@@ -3498,11 +3498,6 @@
         |=  jon/json
         (bind (wit jon) poq)
       ::                                                ::  ++da:jo:js:eyre
-      ++  da                                            ::  UTC date
-        |=  jon/json
-        ?.  ?=({$s *} jon)  ~
-        (bind (stud:chrono:behn p.jon) |=(a/date (year a)))
-      ::                                                ::  ++di:jo:js:eyre
       ++  di                                            ::  millisecond date
         %+  cu
           |=  a/@u  ^-  @da

lib/twitter.hoon

@@ -11,6 +11,7 @@
 =,  js:eyre
 =,  url:eyre
 =,  xml:eyre
+=,  chrono:behn
 ::
 ::::  functions
   ::
@@ -80,7 +81,7 @@
     %-  ot
     :~  id+ni
         user+(ot (fasp screen-name+(su usor)) ~)
-        (fasp created-at+da)
+        (fasp created-at+(cu year (ci stud so)))
         text+(cu crip (su (star escp:^parse)))  :: parse html escapes
     ==
   ++  usel