[VOL-2674] Fixed logs missing instance id and caller info

Change-Id: I03ca006ba28f20615e93d2b5daedcddd0b24ed9c
diff --git a/pkg/log/log_test.go b/pkg/log/log_test.go
index be65b02..121829e 100644
--- a/pkg/log/log_test.go
+++ b/pkg/log/log_test.go
@@ -63,9 +63,8 @@
 }
 
 func TestUpdateLoggers(t *testing.T) {
-	testLogger, err := UpdateLogger(Fields{"update": "update"})
+	err := UpdateLogger(Fields{"update": "update"})
 	assert.Nil(t, err)
-	assert.NotNil(t, testLogger)
 }
 
 func TestUpdateLogLevel(t *testing.T) {