remvoe response dropping mechanism in the connection

connection.go

@@ -106,9 +106,6 @@ type Connection struct {
 	Locales    []string // Server locales
 
 	closed int32 // Will be 1 if the connection is closed, 0 otherwise. Should only be accessed as atomic
-
-	// Number of frame to drop before before considering it as the valid response
-	dropped uint32
 }
 
 type readDeadliner interface {
@@ -491,11 +488,6 @@ func (c *Connection) dispatch0(f frame) {
 				c <- Blocking{Active: false}
 			}
 		default:
-			if d := atomic.LoadUint32(&c.dropped); d > 0 {
-				atomic.AddUint32(&c.dropped, ^uint32(0))
-				return
-			}
-
 			c.rpc <- m
 		}
 	case *heartbeatFrame:
@@ -718,7 +710,6 @@ func (c *Connection) call(ctx context.Context, req message, res ...message) erro
 
 	select {
 	case <-ctx.Done():
-		atomic.AddUint32(&c.dropped, 1)
 		return ErrCanceled
 	case err, ok := <-c.errors:
 		if !ok {