remove unused function

push.go

@@ -54,11 +54,11 @@ func InitPush(pushURL string, interval time.Duration, extraLabels string, pushPr
 //
 // It is OK calling InitPushWithConfig multiple times with different pushURL -
 // in this case metrics are pushed to all the provided pushURL urls.
-func InitPushWithConfig(requestConfig *RequestConfig, pushProcessMetrics bool) error {
+func InitPushWithConfig(requestConfig *RequestConfig, pushProcessMetrics bool) {
 	requestConfig.writeMetrics = func(w io.Writer) {
 		WritePrometheus(w, pushProcessMetrics)
 	}
-	return InitPushExtWithConfig(requestConfig)
+	go requestConfig.Request()
 }
 
 // InitPush sets up periodic push for metrics from s to the given pushURL with the given interval.
@@ -86,11 +86,11 @@ func (s *Set) InitPush(pushURL string, interval time.Duration, extraLabels strin
 //
 // It is OK calling InitPushWithConfig multiple times with different pushURL -
 // in this case metrics are pushed to all the provided pushURL urls.
-func (s *Set) InitPushWithConfig(requestConfig *RequestConfig) error {
+func (s *Set) InitPushWithConfig(requestConfig *RequestConfig) {
 	requestConfig.writeMetrics = func(w io.Writer) {
 		s.WritePrometheus(w)
 	}
-	return InitPushExtWithConfig(requestConfig)
+	go requestConfig.Request()
 }
 
 // InitPushExt sets up periodic push for metrics obtained by calling writeMetrics with the given interval.
@@ -118,16 +118,6 @@ func InitPushExt(pushURL string, interval time.Duration, extraLabels string, wri
 	return nil
 }
 
-// InitPushExtWithConfig sets up periodic push for metrics obtained by calling writeMetrics with the given interval.
-// defined in the RequestConfig
-//
-// It is OK calling InitPushExt multiple times with different writeMetrics -
-// in this case all the metrics generated by writeMetrics callbacks are written to pushURL.
-func InitPushExtWithConfig(requestConfig *RequestConfig) error {
-	go requestConfig.Request()
-	return nil
-}
-
 var pushMetrics = NewSet()
 
 func writePushMetrics(w io.Writer) {