rpc/benchmark: remove test init duplicate

  remove test init duplicate that was introduced by vcl/12227.

Change-Id: I5576cbb648a85ddaadc5266ade4f68c5d3287b81
diff --git a/runtime/internal/rpc/benchmark/simple/main.go b/runtime/internal/rpc/benchmark/simple/main.go
index fc5beaa..8173e82 100644
--- a/runtime/internal/rpc/benchmark/simple/main.go
+++ b/runtime/internal/rpc/benchmark/simple/main.go
@@ -46,9 +46,6 @@
 // rpc.Client doesn't export an interface for closing connection. So we
 // use the stream manager directly here.
 func benchmarkRPCConnection(b *testing.B) {
-	ctx, shutdown := test.V23Init()
-	defer shutdown()
-
 	mp := runtime.GOMAXPROCS(numCPUs)
 	defer runtime.GOMAXPROCS(mp)