Revert "add 'use-agent' option"

This reverts commit edcb237.

index.js

@@ -78,12 +78,6 @@ function WebTorrent (opts) {
   }
   self.nodeIdBuffer = Buffer.from(self.nodeId, 'hex')
 
-  if (typeof opts.userAgent === 'string') {
-    self.userAgent = opts.userAgent
-  } else {
-    self.userAgent = 'WebTorrent/' + VERSION + ' (https://webtorrent.io)'
-  }
-
   self.destroyed = false
   self.listening = false
   self.torrentPort = opts.torrentPort || 0

lib/torrent.js

@@ -330,7 +330,6 @@ Torrent.prototype._onListening = function () {
     infoHash: self.infoHash,
     announce: self.announce,
     peerId: self.client.peerId,
-    userAgent: self.client.userAgent,
     dht: !self.private && self.client.dht,
     tracker: trackerOpts,
     port: self.client.torrentPort

package.json

@@ -1,7 +1,7 @@
 {
   "name": "webtorrent",
   "description": "Streaming torrent client",
-  "version": "0.97.3",
+  "version": "0.97.2",
   "author": {
     "name": "WebTorrent, LLC",
     "email": "feross@webtorrent.io",