Removes client-side filter for types.

This removes the client-side filter for types (formerly planning element
types) in favor of the previously enabled server-side filter.

app/assets/javascripts/timelines.js

@@ -2098,7 +2098,6 @@ Timeline = {
     },
     filteredOut: function() {
       var filtered = this.filteredOutForProjectFilter() ||
-                     this.filteredOutForPlanningElementTypes() ||
                      this.filteredOutForResponsibles();
 
       this.filteredOut = function() { return filtered; };
@@ -2117,12 +2116,6 @@ Timeline = {
         this.getResponsible()
       );
     },
-    filteredOutForPlanningElementTypes: function() {
-      return Timeline.filterOutBasedOnArray(
-        this.timeline.options.planning_element_types,
-        this.getPlanningElementType()
-      );
-    },
     all: function(timeline) {
       // collect all planning elements
       var r = timeline.planning_elements;