Remove unused buffer pool

tracer/transport.go

@@ -7,7 +7,6 @@ import (
 	"log"
 	"net/http"
 	"strconv"
-	"sync"
 	"time"
 
 	"github.com/DataDog/dd-trace-go/tracer/ext"
@@ -58,7 +57,6 @@ type httpTransport struct {
 	serviceURL        string            // the delivery URL for services
 	legacyServiceURL  string            // the legacy delivery URL for services
 	pool              *encoderPool      // encoding allocates lot of buffers (which might then be resized) so we use a pool so they can be re-used
-	bufferPool        *bufferPool       // we use this buffer pool to avoid race conditions when sending the encoder through the network
 	client            *http.Client      // the HTTP client used in the POST
 	headers           map[string]string // the Transport headers
 	compatibilityMode bool              // the Agent targets a legacy API for compatibility reasons
@@ -82,7 +80,6 @@ func newHTTPTransport(hostname, port string) *httpTransport {
 		serviceURL:       fmt.Sprintf("http://%s:%s/v0.3/services", hostname, port),
 		legacyServiceURL: fmt.Sprintf("http://%s:%s/v0.2/services", hostname, port),
 		pool:             pool,
-		bufferPool:       newBufferPool(),
 		client: &http.Client{
 			Timeout: defaultHTTPTimeout,
 		},