nmhw21: cleanup

- fix formatting
- remove unused variable

board/nm/nmhw21/board.c

@@ -666,7 +666,7 @@ static void init_user_module(void)
 
 	da9063_release_i2c_bus(bus);
 
-	mdelay(200);										/* Give module some time to boot */
+	mdelay(200);					/* Give module some time to boot */
 	um_init(CONFIG_UM_I2C_BUS);			/* Try to detect user module */
 
 	if (um_present()) {
@@ -699,8 +699,6 @@ static void init_sim_mux(void)
 
 static void init_gsm(void)
 {
-	int bus;
-
 	/*
 	 * Perform power up sequence for TOBY-L2 modem.
 	 *