code: protected boolean undeployApk( final String packageName ) throws MojoExecutionException, MojoFailureException
      {
  
          final AtomicBoolean result = new AtomicBoolean( true ); // if no devices are present, it counts as successful
  
          doWithDevices( new DeviceCallback()
          {
              public void doWithDevice( final IDevice device ) throws MojoExecutionException
              {
                  String deviceLogLinePrefix = DeviceHelper.getDeviceLogLinePrefix( device );
                  try
                  {
                      device.uninstallPackage( packageName );
                      getLog().info( deviceLogLinePrefix + "Successfully uninstalled " + packageName );
                      getLog().debug( " from " + DeviceHelper.getDescriptiveName( device ) );
                      result.set( true );
                  }
                  catch ( InstallException e )
                  {
                      result.set( false );
                      throw new MojoExecutionException( deviceLogLinePrefix + "Uninstall of " + packageName
                              + " failed.", e );
                  }
              }
          } );
  
          return result.get();
      }
docs: Undeploys an apk, specified by package name, from a connected emulator
  or usb device. Also deletes the application's data and cache
  directories on the device.
  
  @param packageName the package name to undeploy.
  @return <code>true</code> if successfully undeployed, <code>false</code> otherwise.