Remove fake MIME types.

They cause warnings when running update-mime-database.

REVIEW: 117135

src/mimetypes/kde5.xml

@@ -174,34 +174,6 @@ Notes:
     <glob pattern="*.abc"/>
   </mime-type>
 
-  <!-- all/ fake mime types -->
-  <mime-type type="all/all">
-    <comment>all files and folders</comment>
-  </mime-type>
-  <mime-type type="all/allfiles">
-    <comment>all files</comment>
-  </mime-type>
-
-  <!-- uri/ fake mime types -->
-  <mime-type type="uri/mms">
-    <comment>mms: URIs</comment>
-  </mime-type>
-  <mime-type type="uri/mmst">
-    <comment>mmst: URIs</comment>
-  </mime-type>
-  <mime-type type="uri/mmsu">
-    <comment>mmsu: URIs</comment>
-  </mime-type>
-  <mime-type type="uri/pnm">
-    <comment>pnm: URIs</comment>
-  </mime-type>
-  <mime-type type="uri/rtspt">
-    <comment>rtspt: URIs</comment>
-  </mime-type>
-  <mime-type type="uri/rtspu">
-    <comment>rtspu: URIs</comment>
-  </mime-type>
-
   <mime-type type="application/vnd.kde.fontspackage">
     <sub-class-of type="application/zip"/>
     <comment>fonts package</comment>