Add support for multiple connected android devices

* We forward a different range of ports to each device so we can pick
  and choose which to communicate with based on its index.
* The index is encoded in the 'hostname' like so: adb:X:deviceidhere
* Whenever we want to interact with an android device we always specify
  the device, never leave it to a default.

qrenderdoc/Windows/MainWindow.cpp

@@ -1523,11 +1523,6 @@ void MainWindow::on_action_Manage_Remote_Servers_triggered()
   rm->closeWhenFinished();
 }
 
-void MainWindow::on_action_Start_Android_Remote_Server_triggered()
-{
-  RENDERDOC_StartAndroidRemoteServer();
-}
-
 void MainWindow::on_action_Settings_triggered()
 {
   SettingsDialog about(m_Ctx, this);