aw: Removes a no longer needed DEPS include rule

WebCompositorInputHandler is no longer exist in the code base.

Bug: None
Change-Id: I3562b09949bdc87b4f6bdb36cc4b5514dd862e4e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2367437
Commit-Queue: Changwan Ryu <changwan@chromium.org>
Reviewed-by: Changwan Ryu <changwan@chromium.org>
Auto-Submit: Shimi Zhang <ctzsm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800242}

android_webview/browser/DEPS

@@ -103,8 +103,6 @@ include_rules = [
   # QuotaStatusCode required by AwQuotaManagerBridge.
   "+third_party/blink/public/mojom/quota",
   "+third_party/blink/public/mojom/mediastream/media_stream.mojom-shared.h",
-  # Interface required for in-process input event handling.
-  "+third_party/blink/public/web/WebCompositorInputHandler.h",
   # For favicon url
   "+third_party/blink/public/mojom/favicon",
   # For find-in-page