Comment out unused code

dns.go

@@ -2,10 +2,8 @@ package cachet
 
 import (
 	"net"
-
-	"strings"
-
 	"regexp"
+	"strings"
 
 	"github.com/Sirupsen/logrus"
 	"github.com/miekg/dns"

monitor.go

@@ -50,10 +50,10 @@ type AbstractMonitor struct {
 
 	// lag / average(lagHistory) * 100 = percentage above average lag
 	// PerformanceThreshold sets the % limit above which this monitor will trigger degraded-performance
-	PerformanceThreshold float32
+	// PerformanceThreshold float32
 
 	history []bool
-	lagHistory     []float32
+	// lagHistory     []float32
 	lastFailReason string
 	incident       *Incident
 	config         *CachetMonitor