ath10k: remove unused struct ath10k::dev_type

It's unused so let's get rid of it. Compile tested only, no functional changes.
Signed-off-by: NKalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1608574994-30706-1-git-send-email-kvalo@codeaurora.org

drivers/net/wireless/ath/ath10k/core.h

@@ -1019,7 +1019,6 @@ struct ath10k {
 	enum ath10k_hw_rev hw_rev;
 	u16 dev_id;
 	u32 chip_id;
-	enum ath10k_dev_type dev_type;
 	u32 target_version;
 	u8 fw_version_major;
 	u32 fw_version_minor;