Altium - Hiding connections for a particular component in the PCB designer
Ok, I searched on the web a solution to the problem and I found that in Altium there isn't a feature wich hide the connections for only one component. However I found (in the Altium forum) two escamotage to obtain it:



  The easiest way to hide net connections to a single footprint would be
  to temporarily remove those pins from the net.  Just be sure to
  "update from schematic" at some later point in the project.


It seems the faster way to hide temporally the connection for the component.


  You can get the result using the From-To feature, but it would take
  some time to setup. Try this page for more information.



These solutions seem to be the better ways but any other suggestion are welcome.