Disable pixelfed for now

It needs a later version of php than exists in debian

src/freedombone-app-pixelfed

 #
 #                              Freedom in the Cloud
 #
+# Pixeldef app
+#
+# Requires php 7.1.3 but debian version is 7.0.27
+#
 # License
 # =======
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-VARIANTS='full full-vim'
+VARIANTS=''
 
 IN_DEFAULT_INSTALL=0
 SHOW_ON_ABOUT=1
     git checkout "$PIXELFED_COMMIT" -b "$PIXELFED_COMMIT"
     set_completion_param "pixelfed commit" "$PIXELFED_COMMIT"
 
+    install_composer
+
     chmod g+w "/var/www/$PIXELFED_DOMAIN_NAME/htdocs"
     chown -R www-data:www-data "/var/www/$PIXELFED_DOMAIN_NAME/htdocs"
 
     sed -i "s|MAIL_HOST=.*|MAIL_HOST=localhost|g" "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env"
     sed -i "s|MAIL_PORT=.*|MAIL_PORT=25|g" "/var/www/$PIXELFED_DOMAIN_NAME/htdocs/.env"
 
-    install_composer
     chown -R www-data:www-data "/var/www/$PIXELFED_DOMAIN_NAME/htdocs"
 
     create_site_certificate "$PIXELFED_DOMAIN_NAME" 'yes'