This is introduced in commit 903e45411099 ("Bluetooth: AMP: Use HCI cmd to Read Loc AMP Assoc")
and never be implemented. 

Fixes: 903e45411099 ("Bluetooth: AMP: Use HCI cmd to Read Loc AMP Assoc")
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
---
v3: Add Fixes tag
v2: fix SOB and update commit log
---
 net/bluetooth/amp.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/net/bluetooth/amp.h b/net/bluetooth/amp.h
index 832764dfbfb3..97c87abd129f 100644
--- a/net/bluetooth/amp.h
+++ b/net/bluetooth/amp.h
@@ -28,7 +28,6 @@ struct hci_conn *phylink_add(struct hci_dev *hdev, struct amp_mgr *mgr,
 
 int phylink_gen_key(struct hci_conn *hcon, u8 *data, u8 *len, u8 *type);
 
-void amp_read_loc_info(struct hci_dev *hdev, struct amp_mgr *mgr);
 void amp_read_loc_assoc_frag(struct hci_dev *hdev, u8 phy_handle);
 void amp_read_loc_assoc(struct hci_dev *hdev, struct amp_mgr *mgr);
 void amp_read_loc_assoc_final_data(struct hci_dev *hdev,
-- 
2.34.1

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <luiz.von.dentz@intel.com>:

On Fri, 28 Jul 2023 11:30:11 +0800 you wrote:
> This is introduced in commit 903e45411099 ("Bluetooth: AMP: Use HCI cmd to Read Loc AMP Assoc")
> and never be implemented.
> 
> Fixes: 903e45411099 ("Bluetooth: AMP: Use HCI cmd to Read Loc AMP Assoc")
> Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
> ---
> v3: Add Fixes tag
> v2: fix SOB and update commit log
> 
> [...]

Here is the summary with links:
  - [v3,-next] Bluetooth: Remove unused declaration amp_read_loc_info()
    https://git.kernel.org/bluetooth/bluetooth-next/c/c8573f208a12

You are awesome, thank you!
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