Revert "added copyManyCard"

This reverts commit c3fe70e09433346f25ad3701dca7f07ad441624f.

client/components/cards/cardDetails.js

@@ -170,7 +170,6 @@ Template.cardDetailsActionsPopup.events({
   'click .js-spent-time': Popup.open('editCardSpentTime'),
   'click .js-move-card': Popup.open('moveCard'),
   'click .js-copy-card': Popup.open('copyCard'),
-  'click .js-copy-many-card': Popup.open('copyManyCard'),
   'click .js-move-card-to-top' (evt) {
     evt.preventDefault();
     const minOrder = _.min(this.list().cards().map((c) => c.sort));