Remove 1st implementation of collapse swimlanes. I will do it

differently in next 2nd implementation.

Thanks to xet7 !

client/components/swimlanes/swimlanes.jade

@@ -20,28 +20,6 @@ template(name="swimlane")
         if currentUser.isBoardMember
           unless currentUser.isCommentOnly
             +addListForm
-  //if collapseSwimlane
-  //  // Minimize swimlanes next 2 lines below https://www.w3schools.com/howto/howto_js_accordion.asp
-  //  button(class="accordion")
-  //  div(class="panel")
-  //    .swimlane.js-lists.js-swimlane
-  //      if isMiniScreen
-  //        if currentListIsInThisSwimlane _id
-  //          +list(currentList)
-  //        unless currentList
-  //          each lists
-  //            +miniList(this)
-  //          if currentUser.isBoardMember
-  //            unless currentUser.isCommentOnly
-  //              +addListForm
-  //      else
-  //        each lists
-  //          +list(this)
-  //          if currentCardIsInThisList _id ../_id
-  //            +cardDetails(currentCard)
-  //        if currentUser.isBoardMember
-  //          unless currentUser.isCommentOnly
-  //            +addListForm
 
 template(name="listsGroup")
   .swimlane.list-group.js-lists

client/components/swimlanes/swimlanes.js

@@ -146,24 +146,6 @@ BlazeComponent.extendComponent({
     }
 
     initSortable(boardComponent, $listsDom);
-
-    if (cookies.has('collapseSwimlane')) {
-      // Minimize swimlanes start https://www.w3schools.com/howto/howto_js_accordion.asp
-      const acc = document.getElementsByClassName('accordion');
-      let i;
-      for (i = 0; i < acc.length; i++) {
-        acc[i].addEventListener('click', function() {
-          this.classList.toggle('active');
-          const panel = this.nextElementSibling;
-          if (panel.style.maxHeight) {
-            panel.style.maxHeight = null;
-          } else {
-            panel.style.maxHeight = `${panel.scrollHeight}px`;
-          }
-        });
-      }
-      // Minimize swimlanes end https://www.w3schools.com/howto/howto_js_accordion.asp
-    }
   },
   onCreated() {
     this.draggingActive = new ReactiveVar(false);