nimble/apps/bttester: Remove deprecated BTP GATT service

- Removes files and content related to BTP GATT Service (0x02).
- All necessary content has been migrated to btp_gatts.c and btp_gatts.h files
- Ensured no loss of functionality; all essential GATT components preserved

Author: piotrnarajowski

apps/bttester/src/btp/btp.h

@@ -29,9 +29,8 @@
 #include "bttester.h"
 #include "btp_core.h"
 #include "btp_gap.h"
-#include "btp_gatt.h"
-#include "btp_gattc.h"
 #include "btp_gatts.h"
+#include "btp_gattc.h"
 #include "btp_l2cap.h"
 #include "btp_mesh.h"
 #include "btp_pacs.h"
@@ -45,7 +44,6 @@
 
 #define BTP_SERVICE_ID_CORE    0
 #define BTP_SERVICE_ID_GAP    1
-#define BTP_SERVICE_ID_GATT    2
 #define BTP_SERVICE_ID_L2CAP    3
 #define BTP_SERVICE_ID_MESH    4
 #define BTP_SERVICE_ID_GATTC    6

apps/bttester/src/btp/btp_gatt.h

@@ -106,10 +106,6 @@ uint8_t
 tester_unregister_gap(void);
 void
 tester_init_core(void);
-uint8_t
-tester_init_gatt(void);
-uint8_t
-tester_unregister_gatt(void);
 int
 tester_gattc_notify_rx_ev(uint16_t conn_handle, uint16_t attr_handle,
                           uint8_t indication, struct os_mbuf *om);

apps/bttester/src/btp/bttester.h

@@ -50,7 +50,6 @@ supported_services(const void *cmd, uint16_t cmd_len,
     /* octet 0 */
     tester_set_bit(rp->data, BTP_SERVICE_ID_CORE);
     tester_set_bit(rp->data, BTP_SERVICE_ID_GAP);
-    tester_set_bit(rp->data, BTP_SERVICE_ID_GATT);
 #if MYNEWT_VAL(BLE_L2CAP_COC_MAX_NUM)
     tester_set_bit(rp->data, BTP_SERVICE_ID_L2CAP);
 #endif /* MYNEWT_VAL(BLE_L2CAP_COC_MAX_NUM) */
@@ -86,9 +85,6 @@ register_service(const void *cmd, uint16_t cmd_len,
     case BTP_SERVICE_ID_GAP:
         status = tester_init_gap();
         break;
-    case BTP_SERVICE_ID_GATT:
-        status = tester_init_gatt();
-        break;
 #if MYNEWT_VAL(BLE_L2CAP_COC_MAX_NUM)
     case BTP_SERVICE_ID_L2CAP:
         status = tester_init_l2cap();
@@ -153,9 +149,6 @@ unregister_service(const void *cmd, uint16_t cmd_len,
     case BTP_SERVICE_ID_GAP:
         status = tester_unregister_gap();
         break;
-    case BTP_SERVICE_ID_GATT:
-        status = tester_unregister_gatt();
-        break;
 #if MYNEWT_VAL(BLE_L2CAP_COC_MAX_NUM)
     case BTP_SERVICE_ID_L2CAP:
         status = tester_unregister_l2cap();