Remove unnecessary override in AuthenticatorRequestBubbleDelegate

Change-Id: I6bee01d23c48094ce49ded8066966a2d34336407
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5424472
Auto-Submit: Adem Derinel <derinel@google.com>
Commit-Queue: Adem Derinel <derinel@google.com>
Reviewed-by: Adam Langley <agl@chromium.org>
Commit-Queue: Adam Langley <agl@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1282468}
diff --git a/chrome/browser/ui/views/webauthn/authenticator_request_bubble.cc b/chrome/browser/ui/views/webauthn/authenticator_request_bubble.cc
index d71c7ac..d8c67822 100644
--- a/chrome/browser/ui/views/webauthn/authenticator_request_bubble.cc
+++ b/chrome/browser/ui/views/webauthn/authenticator_request_bubble.cc
@@ -194,8 +194,6 @@
     SizeToContents();
   }
 
-  void OnSheetModelChanged() override {}
-
  private:
   void UpdateHeader() {
     if (!GetWidget()) {