remove timelines menu item

config/initializers/menus.rb

@@ -30,7 +30,6 @@
 require 'redmine/menu_manager'
 
 Redmine::MenuManager.map :top_menu do |menu|
-
   # projects menu will be added by
   # Redmine::MenuManager::TopMenuHelper#render_projects_top_menu_node
 
@@ -262,12 +261,6 @@ Redmine::MenuManager.map :project_menu do |menu|
             caption: :label_workflow_summary,
             parent: :work_packages
 
-  menu.push :timelines,
-            { controller: '/timelines', action: 'index' },
-            param: :project_id,
-            caption: :'timelines.project_menu.timelines',
-            icon: 'icon2 icon-view-timeline'
-
   menu.push :calendar,
             { controller: '/work_packages/calendars', action: 'index' },
             param: :project_id,

config/locales/en.yml

@@ -2208,10 +2208,6 @@ en:
       colors: "Colors"
       project_type: "Project type"
       project_types: "Project types"
-    project_menu:
-      reportings: "Status reportings"
-      reports: "Timeline reports"
-      timelines: "Timelines"
     associations: "Dependencies"
     board_could_not_be_saved: "Board could not be saved"
     button_delete_all: "Delete all"