mt7615: mcu: remove unused structure in mcu.h

#define CONN_STATE_CONNECT	1

#define CONN_STATE_PORT_SECURE	2

struct dev_info {

	u8 omac_idx;

	u8 omac_addr[ETH_ALEN];

	u8 band_idx;

	u8 enable;

	u32 feature;

};

enum {

	DEV_INFO_ACTIVE,

	DEV_INFO_MAX_NUM

};

struct bss_info {

	u8 bss_idx;

	u8 bssid[ETH_ALEN];

	u8 omac_idx;

	u8 band_idx;

	u8 bmc_tx_wlan_idx; /* for bmc tx (sta mode use uc entry) */

	u8 wmm_idx;

	u32 network_type;

	u32 conn_type;

	u16 bcn_interval;

	u8 dtim_period;

	u8 enable;

	u32 feature;

};

struct bss_info_tag_handler {

	u32 tag;

	u32 len;

	void (*handler)(struct mt7615_dev *dev,

			struct bss_info *bss_info, struct sk_buff *skb);

};

struct bss_info_omac {

	__le16 tag;

	__le16 len;