Reverted logging changes that require Go 1.13

.travis.yml

@@ -13,7 +13,7 @@ addons:
             - gcc-5
 
 go:
-    - 1.13.x
+    - 1.10.x
 
 env:
     - TRAVIS_NODE_VERSION="8" CC="gcc-5" CXX="g++-5"

client/lib/webrtc.go

@@ -9,7 +9,6 @@ import (
 	"time"
 
 	"github.com/dchest/uniuri"
-	"github.com/pion/logging"
 	"github.com/pion/webrtc"
 )
 
@@ -156,13 +155,7 @@ func (c *WebRTCPeer) preparePeerConnection() error {
 		c.pc = nil
 	}
 
-	logFactory := logging.NewDefaultLoggerFactory()
-	logFactory.DefaultLogLevel = logging.LogLevelError
-	logFactory.Writer = log.Writer()
-
-	s := webrtc.SettingEngine{
-		LoggerFactory: logFactory,
-	}
+	s := webrtc.SettingEngine{}
 	s.SetTrickle(true)
 	api := webrtc.NewAPI(webrtc.WithSettingEngine(s))
 	pc, err := api.NewPeerConnection(*c.config)