Remove extraneous fmt.Printf calls.

Within test cases, t.Logf is better. Elsewhere, we shouldn't output at allrc.
diff --git a/acceptance/openstack/compute/v2/servers_test.go b/acceptance/openstack/compute/v2/servers_test.go
index 6bdc9e9..05cde73 100644
--- a/acceptance/openstack/compute/v2/servers_test.go
+++ b/acceptance/openstack/compute/v2/servers_test.go
@@ -3,7 +3,6 @@
 package v2
 
 import (
-	"fmt"
 	"os"
 	"testing"
 
@@ -42,7 +41,7 @@
 		return true, nil
 	})
 
-	fmt.Printf("--------\n%d servers listed on %d pages.\n", count, pages)
+	t.Logf("--------\n%d servers listed on %d pages.\n", count, pages)
 }
 
 func networkingClient() (*gophercloud.ServiceClient, error) {