cmd/trace: pkg import only once

Change-Id: Iaaf2e9dbcffb4b1944817b0a4aaecd3554ebfec1
GitHub-Last-Rev: f4ec85a
GitHub-Pull-Request: #67280
Reviewed-on: https://go-review.googlesource.com/c/go/+/584695
Reviewed-by: Cherry Mui <[email protected]>
Auto-Submit: Ian Lance Taylor <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>
Commit-Queue: Ian Lance Taylor <[email protected]>
Reviewed-by: Ian Lance Taylor <[email protected]>

Author: testwill

src/internal/trace/gc_test.go

@@ -6,7 +6,6 @@ package trace
 
 import (
 	"bytes"
-	"internal/trace/v2"
 	tracev2 "internal/trace/v2"
 	"internal/trace/v2/testtrace"
 	"io"
@@ -137,7 +136,7 @@ func TestMMUTrace(t *testing.T) {
 			t.Fatalf("malformed test %s: bad trace file: %v", testPath, err)
 		}
 		var events []tracev2.Event
-		tr, err := trace.NewReader(r)
+		tr, err := tracev2.NewReader(r)
 		if err != nil {
 			t.Fatalf("malformed test %s: bad trace file: %v", testPath, err)
 		}