chore: remove browser_plugin_wheel.patch (#15787)

according to https://crbug.com/725970#c9, chromium should have fixed this upstream

patches/common/chromium/.patches

@@ -7,7 +7,6 @@ blink_file_path.patch
 blink_local_frame.patch
 blink_world_context.patch
 browser_compositor_mac.patch
-browser_plugin_wheel.patch
 can_create_window.patch
 compositor_delegate.patch
 disable_hidden.patch

patches/common/chromium/browser_plugin_wheel.patch

@@ -1,31 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Anonymous <anonymous@electronjs.org>
-Date: Thu, 20 Sep 2018 17:45:21 -0700
-Subject: browser_plugin_wheel.patch
-
-
-diff --git a/content/renderer/browser_plugin/browser_plugin.cc b/content/renderer/browser_plugin/browser_plugin.cc
-index 4d8251069ae9a45e1be22fa03f23b3196116b612..fbd5cc8099629971d670d087fdee89204e3137e3 100644
---- a/content/renderer/browser_plugin/browser_plugin.cc
-+++ b/content/renderer/browser_plugin/browser_plugin.cc
-@@ -656,15 +656,11 @@ blink::WebInputEventResult BrowserPlugin::HandleInputEvent(
- 
-   DCHECK(!blink::WebInputEvent::IsTouchEventType(event.GetType()));
- 
--  // With direct event routing turned on, BrowserPlugin should almost never
--  // see wheel events any more. The two exceptions are (1) scroll bubbling, and
--  // (2) synthetic mouse wheels generated by touchpad GesturePinch events on
--  // Mac, which always go to the mainframe and thus may hit BrowserPlugin if
--  // it's in a top-level embedder. In both cases we should indicate the event
--  // as not handled (for GesturePinch on Mac, indicating the event has been
--  // handled leads to touchpad pinch not working).
--  if (event.GetType() == blink::WebInputEvent::kMouseWheel)
--    return blink::WebInputEventResult::kNotHandled;
-+  if (event.GetType() == blink::WebInputEvent::kMouseWheel) {
-+    auto wheel_event = static_cast<const blink::WebMouseWheelEvent&>(event);
-+    if (wheel_event.resending_plugin_id == browser_plugin_instance_id_)
-+      return blink::WebInputEventResult::kNotHandled;
-+  }
- 
-   if (blink::WebInputEvent::IsGestureEventType(event.GetType())) {
-     auto gesture_event = static_cast<const blink::WebGestureEvent&>(event);