libnet: drop TestMultipleControllersWithSameStore

This test is non-representative of what we now do in libnetwork.
Since the ability of opening the same boltdb database multiple
times in parallel will be dropped in the next commit, just remove
this test.

Signed-off-by: Albin Kerouanton <albinker@gmail.com>

libnetwork/store_test.go

@@ -80,18 +80,3 @@ func OptionBoltdbWithRandomDBFile(t *testing.T) config.Option {
 		c.Scope.Client.Config = &store.Config{Bucket: "testBackend"}
 	}
 }
-
-func TestMultipleControllersWithSameStore(t *testing.T) {
-	cfgOptions := OptionBoltdbWithRandomDBFile(t)
-	ctrl1, err := New(cfgOptions)
-	if err != nil {
-		t.Fatalf("Error new controller: %v", err)
-	}
-	defer ctrl1.Stop()
-	// Use the same boltdb file without closing the previous controller
-	ctrl2, err := New(cfgOptions)
-	if err != nil {
-		t.Fatalf("Local store must support concurrent controllers")
-	}
-	ctrl2.Stop()
-}