Remove mistaken Plyara py2 + 3 release from schedule

Author: CAM-Gerlach

site.js

@@ -278,7 +278,6 @@ $(document).ready(function (){
       {content: 'Py 3 full', start: '2019-01-01', end:'2023-12-31'},
     ],
     'plyara':[
-      {content: '1.x', start: '2018-07-06', end:'2019-02-01', py2:true},
       {content: '2.x', start: '2019-02-01', end:'2020-01-01'},
     ],