remove benchmark.

lib/blockstore/blockstore_bench_test.go

@@ -1,29 +0,0 @@
-package blockstore
-
-import (
-	"sync"
-	"testing"
-)
-
-func BenchmarkCast(b *testing.B) {
-	temp := Blockstore(NewTemporary())
-	for i := 0; i < b.N; i++ {
-		if v, ok := temp.(Viewer); ok {
-			_ = v
-		}
-	}
-}
-
-func BenchmarkOnce(b *testing.B) {
-	var viewer Viewer
-	var once sync.Once
-	temp := Blockstore(NewTemporary())
-	for i := 0; i < b.N; i++ {
-		once.Do(func() {
-			if v, ok := temp.(Viewer); ok {
-				viewer = v
-			}
-		})
-		_ = viewer
-	}
-}