chore: Remove support links that target mozilla's support page on the about dialog, b=(bug #8634), c=no-component

src/browser/base/content/aboutDialog-js.patch

@@ -1,5 +1,5 @@
 diff --git a/browser/base/content/aboutDialog.js b/browser/base/content/aboutDialog.js
-index f6e1391baf12abb91c85a95107bb3923118746c0..76c7b75a4e29056110f1631a50047c4ddd8b1f4a 100644
+index f6e1391baf12abb91c85a95107bb3923118746c0..cac04aa288e8a305d0c8b28e0c919abce87658e5 100644
 --- a/browser/base/content/aboutDialog.js
 +++ b/browser/base/content/aboutDialog.js
 @@ -52,7 +52,7 @@ function init() {
@@ -20,3 +20,18 @@ index f6e1391baf12abb91c85a95107bb3923118746c0..76c7b75a4e29056110f1631a50047c4d
      versionIdKey += "-nightly";
      let buildID = Services.appinfo.appBuildID;
      let year = buildID.slice(0, 4);
+@@ -125,14 +125,6 @@ function init() {
+       window.close();
+     });
+   if (AppConstants.MOZ_UPDATER) {
+-    document
+-      .getElementById("aboutDialogHelpLink")
+-      .addEventListener("click", () => {
+-        openHelpLink("firefox-help");
+-      });
+-    document
+-      .getElementById("submit-feedback")
+-      .addEventListener("click", openFeedbackPage);
+     document
+       .getElementById("checkForUpdatesButton")
+       .addEventListener("command", () => {

src/browser/base/content/aboutDialog-xhtml.patch

@@ -1,5 +1,5 @@
 diff --git a/browser/base/content/aboutDialog.xhtml b/browser/base/content/aboutDialog.xhtml
-index c64980810570fcea84e33fdc2d66ac42a79f4e46..b7198e810a7510fa82cc6801cfd01c88a08d42c1 100644
+index c64980810570fcea84e33fdc2d66ac42a79f4e46..6ef9bf4b88f0a0539d833f662c4dd890fd1fde93 100644
 --- a/browser/base/content/aboutDialog.xhtml
 +++ b/browser/base/content/aboutDialog.xhtml
 @@ -35,6 +35,7 @@
@@ -10,7 +10,18 @@ index c64980810570fcea84e33fdc2d66ac42a79f4e46..b7198e810a7510fa82cc6801cfd01c88
    </linkset>
  
    <html:div id="aboutDialogContainer">
-@@ -125,21 +126,23 @@
+@@ -102,10 +103,6 @@
+                 <label id="version" class="update"/>
+                 <label id="releasenotes" is="text-link" hidden="true" data-l10n-id="releaseNotes-link"/>
+               </hbox>
+-              <description class="text-blurb">
+-                <label id="aboutDialogHelpLink" is="text-link" data-l10n-id="aboutdialog-help-user"/>
+-                <label id="submit-feedback" is="text-link" data-l10n-id="aboutdialog-submit-feedback"/>
+-              </description>
+             </vbox>
+ #endif
+           </hbox>
+@@ -125,21 +122,17 @@
              </description>
            </vbox>
            <description class="text-blurb" id="communityDesc" data-l10n-id="community-2">
@@ -18,12 +29,10 @@ index c64980810570fcea84e33fdc2d66ac42a79f4e46..b7198e810a7510fa82cc6801cfd01c88
 +            <label is="text-link" href="https://github.com/zen-browser/desktop" data-l10n-name="community-mozillaLink"/>
              <label is="text-link" useoriginprincipal="true" href="about:credits" data-l10n-name="community-creditsLink"/>
            </description>
-+#if 0
-           <description class="text-blurb" id="contributeDesc" data-l10n-id="helpus">
-             <label is="text-link" href="https://foundation.mozilla.org/?form=firefox-about" data-l10n-name="helpus-donateLink"/>
-             <label is="text-link" href="https://www.mozilla.org/contribute/?utm_source=firefox-browser&#38;utm_medium=firefox-desktop&#38;utm_campaign=about-dialog" data-l10n-name="helpus-getInvolvedLink"/>
-           </description>
-+#endif
+-          <description class="text-blurb" id="contributeDesc" data-l10n-id="helpus">
+-            <label is="text-link" href="https://foundation.mozilla.org/?form=firefox-about" data-l10n-name="helpus-donateLink"/>
+-            <label is="text-link" href="https://www.mozilla.org/contribute/?utm_source=firefox-browser&#38;utm_medium=firefox-desktop&#38;utm_campaign=about-dialog" data-l10n-name="helpus-getInvolvedLink"/>
+-          </description>
          </vbox>
        </vbox>
      </hbox>

src/browser/themes/shared/zen-icons/icons.css

@@ -286,7 +286,8 @@
   list-style-image: url('home.svg') !important;
 }
 
-#toggle_toolbar-menubar {
+#toggle_toolbar-menubar,
+#appMenu_menu_openHelp {
   display: none;
 }