Collapse Lists to be per user, not per board. In Progress.

Related #5388

Thanks to xet7 !

models/swimlanes.js

@@ -107,13 +107,6 @@ Swimlanes.attachSchema(
       type: String,
       defaultValue: 'swimlane',
     },
-    collapsed: {
-      /**
-       * is the swimlane collapsed
-       */
-      type: Boolean,
-      defaultValue: false,
-    },
   }),
 );
 
@@ -239,10 +232,6 @@ Swimlanes.helpers({
     return ret;
   },
 
-  isCollapsed() {
-    return this.collapsed === true;
-  },
-
   board() {
     return ReactiveCache.getBoard(this.boardId);
   },
@@ -285,10 +274,6 @@ Swimlanes.mutations({
     return { $set: { title } };
   },
 
-  collapse(enable = true) {
-    return { $set: { collapsed: !!enable } };
-  },
-
   archive() {
     if (this.isTemplateSwimlane()) {
       this.myLists().forEach(list => {