Bug in [email protected] when deleting files

[DaneEveritt]

Causes a warning popup in the panel, however the file is still deleted.

04:19:54.736Z FATAL wings: (path={}, method=DELETE)
    Error: Can't remove headers after they are sent
        at ServerResponse.removeHeader (_http_outgoing.js:587:11)
        at ServerResponse.restifyWriteHead [as writeHead] (/srv/daemon/node_modules/restify/lib/response.js:426:14)
        at _cb (/srv/daemon/node_modules/restify/lib/response.js:326:14)
        at ServerResponse.send (/srv/daemon/node_modules/restify/lib/response.js:342:9)
        at Responses.generic204 (/srv/daemon/src/helpers/responses.js:35:25)
        at Auth.server.fs.rm.err (/srv/daemon/src/controllers/routes.js:313:23)
        at CB (/srv/daemon/node_modules/fs-extra/lib/remove/rimraf.js:57:5)
        at options.unlink.er (/srv/daemon/node_modules/fs-extra/lib/remove/rimraf.js:107:14)
        at FSReqWrap.oncomplete (fs.js:135:15)
04:19:54.743Z FATAL wings: (path={}, method=DELETE)
    Error: Can't set headers after they are sent.
        at validateHeader (_http_outgoing.js:504:11)
        at ServerResponse.setHeader (_http_outgoing.js:511:3)
        at ServerResponse.format (/srv/daemon/node_modules/restify/lib/response.js:147:10)
        at ServerResponse.send (/srv/daemon/node_modules/restify/lib/response.js:340:14)
        at Responses.generic500 (/srv/daemon/src/helpers/responses.js:39:25)
        at Responses.generic204 (/srv/daemon/src/helpers/responses.js:33:25)
        at Auth.server.fs.rm.err (/srv/daemon/src/controllers/routes.js:313:23)
        at Async.eachOfLimit (/srv/daemon/src/controllers/fs.js:210:24)
        at replenish (/srv/daemon/node_modules/async/dist/async.js:946:17)
        at iterateeCallback (/srv/daemon/node_modules/async/dist/async.js:931:17)