Removing iPad Tab Switcher experimental flag.

ios/chrome/browser/chrome_switches.cc

Index: ios/chrome/browser/chrome_switches.cc
diff --git a/ios/chrome/browser/chrome_switches.cc b/ios/chrome/browser/chrome_switches.cc
index 2d4c469ee08b8a1499f6a358def0f37649fcb751..a15222d6facfec594fe717ab2933768abd931be3 100644
--- a/ios/chrome/browser/chrome_switches.cc
+++ b/ios/chrome/browser/chrome_switches.cc
@@ -53,9 +53,6 @@ const char kDisableSpotlightActions[] = "disable-spotlight-actions";
 const char kDisableTabStripAutoScrollNewTabs[] =
     "disable-tab-strip-autoscroll-new-tabs";
 
-// Disables the tab switcher.
-const char kDisableTabSwitcher[] = "disable-tab-switcher";
-
 // Disables Physical Web scanning for nearby URLs.
 const char kDisableIOSPhysicalWeb[] = "disable-ios-physical-web";
 
@@ -105,9 +102,6 @@ const char kEnableReaderModeToolbarIcon[] = "enable-reader-mode-toolbar-icon";
 // Enables the Spotlight actions.
 const char kEnableSpotlightActions[] = "enable-spotlight-actions";
 
-// Enables the tab switcher.
-const char kEnableTabSwitcher[] = "enable-tab-switcher";
-
 // Enables Physical Web scanning for nearby URLs.
 const char kEnableIOSPhysicalWeb[] = "enable-ios-physical-web";