deduplicate

administrator/language/en-GB/mod_menu.ini

@@ -70,7 +70,6 @@ MOD_MENU_HELP_PARENT_START_HERE="Start Here"
 MOD_MENU_HELP_RESOURCES="Joomla! Resources"
 MOD_MENU_HELP_SECURITY="Security Centre"
 MOD_MENU_HELP_SHOP="Joomla! Shop"
-MOD_MENU_HELP_PARENT_START_HERE="Start Here"
 ; The string below will be used if the localised sample data has a URL for the desired community forum or if the 'Custom Support Forum' field parameter in the Administrator Menu module has a URL
 MOD_MENU_HELP_SUPPORT_CUSTOM_FORUM="Custom Support Forum"
 MOD_MENU_HELP_SUPPORT_OFFICIAL_FORUM="Official Support Forum"