net: dsa: rzn1-a5psw: remove unnecessary platform_set_drvdata()

Remove unnecessary platform_set_drvdata() in ->remove(), the driver_data
will be set to NULL in device_unbind_cleanup() after calling ->remove().

Signed-off-by: Yang Yingliang <[e-mail]>
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/dsa/rzn1_a5psw.c

···
 	clk_disable_unprepare(a5psw->hclk);
 	clk_disable_unprepare(a5psw->clk);
 
-	platform_set_drvdata(pdev, NULL);
-
 	return 0;
 }