Remove unused MIP events, calbacks and structs

} tBTM_DELETE_STORED_LINK_KEY_COMPLETE;

/* MIP evnets, callbacks    */

enum {

  BTM_MIP_MODE_CHG_EVT,

  BTM_MIP_DISCONNECT_EVT,

  BTM_MIP_PKTS_COMPL_EVT,

  BTM_MIP_RXDATA_EVT

};

typedef uint8_t tBTM_MIP_EVT;

typedef struct {

  tBTM_MIP_EVT event;

  RawAddress bd_addr;

  uint16_t mip_id;

} tBTM_MIP_MODE_CHANGE;

typedef struct {

  tBTM_MIP_EVT event;

  uint16_t mip_id;

  uint8_t disc_reason;

} tBTM_MIP_CONN_TIMEOUT;

#define BTM_MIP_MAX_RX_LEN 17

typedef struct {

  tBTM_MIP_EVT event;

  uint16_t mip_id;

  uint8_t rx_len;

  uint8_t rx_data[BTM_MIP_MAX_RX_LEN];

} tBTM_MIP_RXDATA;

typedef struct {

  tBTM_MIP_EVT event;

  RawAddress bd_addr;

  uint8_t data[11]; /* data[0] shows Vender-specific device type */

} tBTM_MIP_EIR_HANDSHAKE;

typedef struct {

  tBTM_MIP_EVT event;

  uint16_t num_sent; /* Completed packet count at the controller */

} tBTM_MIP_PKTS_COMPL;

typedef union {

  tBTM_MIP_EVT event;

  tBTM_MIP_MODE_CHANGE mod_chg;

  tBTM_MIP_CONN_TIMEOUT conn_tmo;

  tBTM_MIP_EIR_HANDSHAKE eir;

  tBTM_MIP_PKTS_COMPL completed;

  tBTM_MIP_RXDATA rxdata;

} tBTM_MIP_EVENT_DATA;

/* MIP event callback function  */

typedef void(tBTM_MIP_EVENTS_CB)(tBTM_MIP_EVT event, tBTM_MIP_EVENT_DATA data);

/* MIP Device query callback function  */

typedef bool(tBTM_MIP_QUERY_CB)(const RawAddress& dev_addr, uint8_t* p_mode,

                                LinkKey link_key);

/* ACL link on, SCO link ongoing, sniff mode */

#define BTM_CONTRL_ACTIVE 1

/* Scan state - paging/inquiry/trying to connect*/