Remove extra title tag in feedback icon

Fixes https://github.com/mozilla/notes/issues/474

src/sidebar/panel.html

@@ -40,7 +40,6 @@
       <a id="give-feedback-button">
         <svg id="Layer_1" width="20" height="20" data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
           <defs><style>.cls-1{fill:none;stroke:#333;stroke-miterlimit:10} .cls-2{fill:#333}</style></defs>
-          <title>feedback</title>
           <path class="cls-1" d="M14.32 10.58A5.27 5.27 0 0 0 15 8c0-3.31-3.13-6-7-6S1 4.69 1 8s3.13 6 7 6a7.72 7.72 0 0 0 4.37-1.32L15 14z"/><circle class="cls-2" cx="8" cy="8" r="1"/><circle class="cls-2" cx="4" cy="8" r="1"/><circle class="cls-2" cx="12" cy="8" r="1"/>
         </svg>
       </a>