verdin-imx8mp: do not save environment when it's nowhere

This code part is broken, remove it.

Signed-off-by: Andrejs Cainikovs <andrejs.cainikovs@toradex.com>
Signed-off-by: Denys Drozdov <denys.drozdov@toradex.com>

board/toradex/verdin-imx8mp/verdin-imx8mp.c

@@ -108,9 +108,6 @@ static void select_dt_from_module_version(void)
 	if (strcmp(variant, env_variant)) {
 		printf("Setting variant to %s\n", variant);
 		env_set("variant", variant);
-
-		if (IS_ENABLED(CONFIG_ENV_IS_NOWHERE))
-			env_save();
 	}
 }