Remove obsolete options from config_defaults_inc.php and docs

Fixes #22474

config_defaults_inc.php

@@ -917,13 +917,6 @@
  */
 $g_enable_project_documentation = OFF;
 
-/**
- * Display another instance of the menu at the bottom.  The top menu will still
- * remain.
- * @global integer $g_show_footer_menu
- */
-$g_show_footer_menu = OFF;
-
 /**
  * show extra menu bar with all available projects
  * @global integer $g_show_project_menu_bar
@@ -1031,14 +1024,6 @@
  */
 $g_show_bug_project_links = ON;
 
-/**
- * Show a legend with percentage of bug status
- * x% of all bugs are new, y% of all bugs are assigned and so on.
- * If set to ON it will printed below the status colour legend.
- * @global integer $g_status_percentage_legend
- */
-$g_status_percentage_legend = OFF;
-
 /**
  * Position of the filter box, can be: POSITION_*
  * POSITION_TOP, POSITION_BOTTOM, or POSITION_NONE for none.
@@ -4478,7 +4463,6 @@
 	'show_bug_project_links',
 	'show_changelog_dates',
 	'show_detailed_errors',
-	'show_footer_menu',
 	'show_log_threshold',
 	'show_memory_usage',
 	'show_monitor_list_threshold',
@@ -4501,7 +4485,6 @@
 	'sponsorship_enum_string',
 	'status_enum_string',
 	'status_legend_position',
-	'status_percentage_legend',
 	'stop_on_errors',
 	'store_reminders',
 	'stored_query_create_shared_threshold',

docbook/Admin_Guide/en-US/config/display.xml

@@ -51,14 +51,6 @@
 				<para>The default URL to be associated with the logo.  By default this is set to $g_default_home_page (which defaults to My View page). Clicking on the logo from any page in the bug tracker will navigate to the URL specified in this configuration option.</para>
 			</listitem>
 		</varlistentry>
-		<varlistentry>
-			<term>$g_show_footer_menu</term>
-			<listitem>
-				<para>Show the menu at the bottom of the page as well as at the
-					top. Default value is OFF.
-				</para>
-			</listitem>
-		</varlistentry>
 		<varlistentry>
 			<term>$g_show_project_menu_bar</term>
 			<listitem>