--- a/devtools/shim/aboutdevtools/aboutdevtools.xhtml
+++ b/devtools/shim/aboutdevtools/aboutdevtools.xhtml
@@ -98,32 +98,14 @@
           <p class="feature-desc">Unblock bottlenecks, streamline processes, optimize assets.</p>
         </li>
 
         <li class="feature">
           <img class="feature-icon" src="chrome://devtools-shim/content/aboutdevtools/images/feature-memory.svg" alt=""/>
           <h3 class="feature-name">Memory</h3>
           <p class="feature-desc">Find memory leaks and make your application zippy.</p>
         </li>
-
-        <li class="feature">
-          <img class="feature-icon" src="chrome://devtools-shim/content/aboutdevtools/images/feature-web-audio.svg" alt=""/>
-          <h3 class="feature-name">Web Audio</h3>
-          <p class="feature-desc">The only developer tool for inspecting the Web Audio API.</p>
-        </li>
-
-        <li class="feature">
-          <img class="feature-icon" src="chrome://devtools-shim/content/aboutdevtools/images/feature-scratchpad.svg" alt=""/>
-          <h3 class="feature-name">Scratchpad</h3>
-          <p class="feature-desc">Edit, write, run and execute JavaScript in real time.</p>
-        </li>
-
-        <li class="feature">
-          <img class="feature-icon" src="chrome://devtools-shim/content/aboutdevtools/images/feature-style-editor.svg" alt=""/>
-          <h3 class="feature-name">Style Editor</h3>
-          <p class="feature-desc">Edit and manage all your CSS stylesheets in your browser.</p>
-        </li>
       </ul>
     </div>
   </div>
 
 </body>
 </html>

deleted file mode 100644
--- a/devtools/shim/aboutdevtools/images/feature-scratchpad.svg
+++ /dev/null
@@ -1,1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="222" height="122" viewBox="0 0 222 122"><defs><filter id="a" filterUnits="userSpaceOnUse" x="53.5" y="11.8" width="114" height="106.4"><feColorMatrix values="1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0"/></filter></defs><mask maskUnits="userSpaceOnUse" x="53.5" y="11.8" width="114" height="106.4" id="b"><path fill="#FFF" d="M167.5 11.8v106.3h-114V11.8z" filter="url(#a)"/></mask><path mask="url(#b)" fill="#306EFD" d="M67.4 14.7c-6 0-11 4.9-11 11v78.6c0 6 4.9 11 11 11h86.2c6 0 11-4.9 11-11V25.6c0-6-4.9-11-11-11H67.4zm86.2 103.4H67.4c-7.7 0-13.9-6.2-13.9-13.9V25.6c0-7.7 6.2-13.9 13.9-13.9h86.2c7.7 0 13.9 6.2 13.9 13.9v78.6c0 7.7-6.2 13.9-13.9 13.9z"/><path fill="#0022A9" d="M132 23.4h2.9V3.5H132m16.2 19.9h2.9V3.5h-2.9m-31.8 19.9h2.9V3.5h-2.9m-15.7 19.9h2.9V3.5h-2.9M85.1 23.4H88V3.5h-2.9M69.4 23.4h3V3.5h-3"/><path fill="#4DE5FF" d="M77.8 41.3h66.6v-2.9H77.8m0 20.2h66.6v-2.9H77.8m0 20.2h66.6V73H77.8m48 20.2h18.6v-2.9h-18.6m-48 2.9h48v-2.9h-48"/></svg>

deleted file mode 100644
--- a/devtools/shim/aboutdevtools/images/feature-style-editor.svg
+++ /dev/null
@@ -1,1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="222" height="122" viewBox="0 0 222 122"><path fill="#306EFD" d="M53.5 27.5v89.6h90.3V50h-3.1v64H56.6V30.7h69.7v-3.2"/><path fill="#4DE5FF" d="M120.6 94.1H76.7V50.5H103v3.2H79.9v37.2h37.6V73.3h3.1"/><path fill="#0022A9" d="M96.6 80.8c-1.2 0-2.3-.4-3-1.1-1.1-1.2-1.4-3.1-.6-5.6l3.6-17 35.9-36.2 2.2 2.2-35.2 35.5-3.4 16.2c-.5 1.8-.3 2.5-.2 2.6.1.2.9.3 2.5-.1l16.7-3L150 39l2.2 2.2-35.6 36-17.5 3.2c-.9.2-1.7.4-2.5.4"/><path fill="#306EFD" d="M168.5 14.2c0-2.2-.8-4.3-2.4-5.8l-1-1c-3.2-3.2-8.4-3.2-11.5 0l-16.3 16L126.1 12l-2.2 2.2L159 49.7l2.2-2.2L150 36.2 166.1 20c1.5-1.6 2.4-3.6 2.4-5.8zm-4.6 3.5L147.8 34l-8.3-8.4 16.3-16c2-2 5.2-2 7.1 0l1 1c1 1 1.5 2.2 1.5 3.6-.1 1.3-.6 2.6-1.5 3.5z"/></svg>

deleted file mode 100644
--- a/devtools/shim/aboutdevtools/images/feature-web-audio.svg
+++ /dev/null
@@ -1,1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="222" height="122" viewBox="0 0 222 122"><path fill="#306EFD" d="M130.7 103.3H36.5c-5.2 0-9.5-4.3-9.5-9.5V4.4h145.5v44.9h-2.8V7.2h-140v86.6c0 3.7 3 6.7 6.7 6.7h94.2v2.8z"/><path fill="#306EFD" d="M28.4 30h142.7v-2.8H28.4M43 17.2c0 2-1.6 3.5-3.5 3.5-2 0-3.5-1.6-3.5-3.5s1.6-3.5 3.5-3.5c1.9-.1 3.5 1.5 3.5 3.5M54.8 17.2c0 2-1.6 3.5-3.5 3.5-2 0-3.5-1.6-3.5-3.5s1.6-3.5 3.5-3.5c1.9-.1 3.5 1.5 3.5 3.5M66.7 17.2c0 2-1.6 3.5-3.5 3.5-2 0-3.5-1.6-3.5-3.5s1.6-3.5 3.5-3.5c1.9-.1 3.5 1.5 3.5 3.5M39.4 49.4h47v-2.7h-47M39.4 78.5h47v-2.7h-47M93.8 49.4h18.5v-2.7H93.8M39.4 64h61.9v-2.8H39.4"/><path fill="#0022A9" d="M158.6 49.8c-18 0-32.7 14.6-32.7 32.6s14.7 32.6 32.7 32.6 32.7-14.6 32.7-32.6-14.7-32.6-32.7-32.6m0 68c-19.6 0-35.5-15.9-35.5-35.4s16-35.4 35.5-35.4 35.5 15.9 35.5 35.4-15.9 35.4-35.5 35.4"/><path fill="#4DE5FF" d="M183 93.8c-3.4 0-4.6-5.2-5.9-11.2-.6-2.7-2-9-3.2-9-1.2 0-2.6 6.3-3.2 9-1.4 6-2.5 11.1-5.9 11.1-3.4 0-4.6-5.2-5.9-11.1-.6-2.7-2-9-3.2-9-1.2 0-2.6 6.3-3.2 9-1.4 6-2.5 11.1-5.9 11.1s-4.6-5.2-5.9-11.2c-.6-2.7-2-9-3.2-9v-2.8c3.4 0 4.6 5.2 5.9 11.1.6 2.7 2 9 3.2 9 1.2 0 2.6-6.3 3.2-9 1.4-6 2.5-11.1 5.9-11.1 3.4 0 4.6 5.2 5.9 11.1.6 2.7 2 9 3.2 9 1.2 0 2.6-6.3 3.2-9 1.4-6 2.5-11.2 5.9-11.2s4.6 5.2 5.9 11.1c.6 2.7 2 9 3.2 9v3.1z"/></svg>

--- a/devtools/shim/jar.mn
+++ b/devtools/shim/jar.mn
@@ -19,13 +19,10 @@ devtools-shim.jar:
     content/aboutdevtools/images/feature-console.svg (aboutdevtools/images/feature-console.svg)
     content/aboutdevtools/images/feature-debugger.svg (aboutdevtools/images/feature-debugger.svg)
     content/aboutdevtools/images/feature-network.svg (aboutdevtools/images/feature-network.svg)
     content/aboutdevtools/images/feature-memory.svg (aboutdevtools/images/feature-memory.svg)
     content/aboutdevtools/images/feature-visual-editing.svg (aboutdevtools/images/feature-visual-editing.svg)
     content/aboutdevtools/images/feature-responsive-mode.svg (aboutdevtools/images/feature-responsive-mode.svg)
     content/aboutdevtools/images/feature-storage.svg (aboutdevtools/images/feature-storage.svg)
     content/aboutdevtools/images/feature-performance.svg (aboutdevtools/images/feature-performance.svg)
-    content/aboutdevtools/images/feature-style-editor.svg (aboutdevtools/images/feature-style-editor.svg)
-    content/aboutdevtools/images/feature-web-audio.svg (aboutdevtools/images/feature-web-audio.svg)
-    content/aboutdevtools/images/feature-scratchpad.svg (aboutdevtools/images/feature-scratchpad.svg)
 
     content/DevToolsShim.jsm  (DevToolsShim.jsm)