Remove taskable.js

app/assets/javascripts/behaviors/taskable.js.coffee

-window.updateTaskState = (taskableType) ->
-  objType = taskableType.data
-  isChecked = $(this).prop("checked")
-  if $(this).is(":checked")
-    stateEvent = "task_check"
-  else
-    stateEvent = "task_uncheck"
-
-  taskableUrl = $("form.edit-" + objType).first().attr("action")
-  taskableNum = taskableUrl.match(/\d+$/)
-  taskNum = 0
-  $("li.task-list-item input:checkbox").each( (index, e) =>
-    if e == this
-      taskNum = index + 1
-  )
-
-  $.ajax
-    type: "PATCH"
-    url: taskableUrl
-    data: objType + "[state_event]=" + stateEvent +
-      "&" + objType + "[task_num]=" + taskNum