Remove unused func, var, and const (#928)

Signed-off-by: Mario Trangoni <mjtrangoni@gmail.com>

3 files changed, 0 insertions, 11 deletions

diff --git a/collector/collector.go b/collector/collector.go
index e9a78f0..f657a66 100644
--- a/collector/collector.go
+++ b/collector/collector.go
@@ -42,10 +42,6 @@ var (
         )
 )
 
-func warnDeprecated(collector string) {
-        log.Warnf("The %s collector is deprecated and will be removed in the future!", collector)
-}
-
 const (
         defaultEnabled  = true
         defaultDisabled = false
diff --git a/collector/cpu_linux.go b/collector/cpu_linux.go
index e79d00c..e2a3122 100644
--- a/collector/cpu_linux.go
+++ b/collector/cpu_linux.go
@@ -19,7 +19,6 @@ import (
         "fmt"
         "os"
         "path/filepath"
-        "regexp"
         "strconv"
         "strings"
 
@@ -28,10 +27,6 @@ import (
         "github.com/prometheus/procfs"
 )
 
-var (
-        digitRegexp = regexp.MustCompile("[0-9]+")
-)
-
 type cpuCollector struct {
         cpu                *prometheus.Desc
         cpuGuest           *prometheus.Desc
diff --git a/collector/textfile.go b/collector/textfile.go
index 03a5e11..bc2ac43 100644
--- a/collector/textfile.go
+++ b/collector/textfile.go
@@ -22,7 +22,6 @@ import (
         "path/filepath"
         "sort"
         "strings"
-        "sync"
         "time"
 
         "github.com/prometheus/client_golang/prometheus"
@@ -34,7 +33,6 @@ import (
 
 var (
         textFileDirectory = kingpin.Flag("collector.textfile.directory", "Directory to read text files with metrics from.").Default("").String()
-        textFileAddOnce   sync.Once
         mtimeDesc         = prometheus.NewDesc(
                 "node_textfile_mtime_seconds",
                 "Unixtime mtime of textfiles successfully read.",