Removed old line wrapper hack

amd/src/page-edit-plan.js

@@ -85,10 +85,6 @@ export function init(contextid,categoryid) {
             usedcontexts: [],
         },
         created() {
-            this.$root.$on('redrawLines',()=>{
-                // Ugly hack, but currently the only way to properly fix scrollablility in the lines
-                fixLineWrappers();
-            });
             this.$root.$on('studyplanRemoved',(studyplan)=>{
                 
                 if(app.activestudyplan == studyplan){
@@ -110,7 +106,6 @@ export function init(contextid,categoryid) {
             });
         },
         mounted() {
-            fixLineWrappers();
             call([{
                 methodname: 'local_treestudyplan_list_studyplans',
                 args: { context_id: contextid}