Feedback Menu: Remove aria-lablledby for file input

Bug: 1065895
Change-Id: I87c383d9b8091b41aa2aeda237d49e9a6db3caa5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2581029Reviewed-by: dpapad <dpapad@chromium.org>
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#835307}

chrome/browser/resources/feedback/html/default.html

@@ -55,8 +55,7 @@
     <!-- Attach a file -->
     <div id="attach-file-container" class="text-field-container">
       <label id="attach-file-label" i18n-content="attachFileLabel"></label>
-      <input id="attach-file" type="file" aria-labelledby="attach-file-label"
-           aria-describedby="attach-file-note">
+      <input id="attach-file" type="file" aria-describedby="attach-file-note">
       <div id="custom-file-container" hidden>
         <label id="attached-filename-text"></label>
         <button id="remove-attached-file" class="remove-file-button"></button>