Remove unused AppData file

chromium-browser.appdata.xml

@@ -1,38 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!-- Copyright 2016 Richard Hughes <richard@hughsie.com> -->
-<component type="desktop">
-  <id>chromium-browser.desktop</id>
-  <update_contact>richard@hughsie.com</update_contact>
-  <metadata_license>CC0-1.0</metadata_license>
-  <project_license>BSD-3-Clause and LGPL-2.1+ and Apache-2.0 and IJG and MIT and GPL-2.0+ and ISC and OpenSSL and (MPL-1.1 or GPL-2.0 or LGPL-2.0)</project_license>
-  <name>Chromium</name>
-  <summary>Web Browser</summary>
-  <description>
-   <p>
-    Chromium is an open-source browser that aims to build a safer, faster, and
-    more stable way to experience the web.
-    We invite you to join us in our effort to build a powerful platform for
-    developing a new generation of web applications.
-   </p>
-   <p>
-    Chromium does not include the non-free AAC, H.264, MP3 or Adobe Flash code
-    that is found in Chrome, although it does support Vorbis, Theora, WebM and
-    HTML5 audio and video standards.
-   </p>
-  </description>
-  <url type="homepage">https://www.chromium.org/Home</url>
-  <screenshots>
-    <screenshot type="default">
-      <image>https://raw.githubusercontent.com/hughsie/fedora-appstream/master/screenshots-extra/chromium-browser/a.png</image>
-      <caption/>
-    </screenshot>
-    <screenshot>
-      <image>https://raw.githubusercontent.com/hughsie/fedora-appstream/master/screenshots-extra/chromium-browser/b.png</image>
-      <caption/>
-    </screenshot>
-  </screenshots>
-  <translation>chromium-browser</translation>
-  <developer_name>Google</developer_name>
-  <url type="bugtracker">https://www.chromium.org/for-testers/bug-reporting-guidelines</url>
-  <url type="help">https://chromium.googlesource.com/chromium/src/+/master/docs/linux_debugging.md</url>
-</component>