Remove old clear browsing data methods on iOS

ios/chrome/browser/ui/commands/clear_browsing_data_command.mm

Index: ios/chrome/browser/ui/commands/clear_browsing_data_command.mm
diff --git a/ios/chrome/browser/ui/commands/clear_browsing_data_command.mm b/ios/chrome/browser/ui/commands/clear_browsing_data_command.mm
index 0b07e9b75b6b7ea15a91929029bdab1ddc95e6b0..c152e517e62d8beb7d7eec962f777dadea105858 100644
--- a/ios/chrome/browser/ui/commands/clear_browsing_data_command.mm
+++ b/ios/chrome/browser/ui/commands/clear_browsing_data_command.mm
@@ -31,11 +31,4 @@
   return self;
 }
 
-- (instancetype)initWithBrowserState:(ios::ChromeBrowserState*)browserState
-                                mask:(int)mask {
-  return [self initWithBrowserState:browserState
-                               mask:mask
-                         timePeriod:browsing_data::ALL_TIME];
-}
-
 @end