Remove opencensus from trillian project

Author: roger2hk

cmd/gcp/main.go

@@ -28,7 +28,6 @@ import (
 	"syscall"
 	"time"
 
-	"github.com/google/trillian/monitoring/opencensus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	sctfe "github.com/transparency-dev/static-ct"
 	"github.com/transparency-dev/static-ct/storage"
@@ -118,17 +117,8 @@ func main() {
 		http.Handle("/metrics", promhttp.Handler())
 	}
 
-	// If we're enabling tracing we need to use an instrumented http.Handler.
-	var handler http.Handler
-	if *tracing {
-		handler, err = opencensus.EnableHTTPServerTracing(*tracingProjectID, *tracingPercent)
-		if err != nil {
-			klog.Exitf("Failed to initialize stackdriver / opencensus tracing: %v", err)
-		}
-	}
-
 	// Bring up the HTTP server and serve until we get a signal not to.
-	srv := http.Server{Addr: *httpEndpoint, Handler: handler}
+	srv := http.Server{Addr: *httpEndpoint}
 	shutdownWG := new(sync.WaitGroup)
 	go awaitSignal(func() {
 		shutdownWG.Add(1)