webnn: Remove stale reference to MLNamedArrayBufferViews
This type no longer exists
Bug: 331351967
Change-Id: I901ef088a4e6cbeb1112fe950af89f52101c670c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6051113
Auto-Submit: Austin Sullivan asully@chromium.org
Reviewed-by: ningxin hu ningxin.hu@intel.com
Commit-Queue: ningxin hu ningxin.hu@intel.com
Cr-Commit-Position: refs/heads/main@{#1389140}