Revert "Set active class on the parent elements of time and datetime input as well when edit-popover is open."

This reverts commit b5ff7bf.

Author: g1eb

src/datetime-input.html

@@ -1,4 +1,4 @@
-<div class="datetime-input datetime" ng-class="{'active': !!selected}">
+<div class="datetime-input datetime">
   <div class="display"
     ng-click="toggleEditPopover()"
     ng-class="{'active': !!selected }">

src/time-input.html

@@ -1,4 +1,4 @@
-<div class="datetime-input time" ng-class="{'active': !!selected}">
+<div class="datetime-input time">
   <div class="display"
     ng-click="toggleEditPopover()"
     ng-class="{'active': !!selected }">