[nrf fromtree] bootutil: Remove bootutil_verify_img

No longer needed.

(cherry picked from commit 7f35491)
Signed-off-by: Dominik Ermel <dominik.ermel@nordicsemi.no>

Author: de-nordic

boot/bootutil/src/bootutil_priv.h

@@ -311,12 +311,6 @@ struct boot_sector_buffer {
 fih_ret bootutil_verify_sig(uint8_t *msg, uint32_t mlen, uint8_t *sig,
                             size_t slen, uint8_t key_id);
 
-/* The function is intended for direct verification of image
- * against provided signature.
- */
-fih_ret bootutil_verify_img(uint8_t *img, uint32_t size,
-                            uint8_t *sig, size_t slen, uint8_t key_id);
-
 fih_ret boot_fih_memequal(const void *s1, const void *s2, size_t n);
 
 const struct flash_area *boot_find_status(const struct boot_loader_state *state,

boot/bootutil/src/image_ed25519.c

@@ -194,23 +194,4 @@ bootutil_verify_sig(uint8_t *msg, uint32_t mlen,
     FIH_RET(fih_rc);
 }
 
-/* Image verification function.
- * The function directly calls bootutil_verify to verify signature
- * of image.
- */
-fih_ret
-bootutil_verify_img(uint8_t *img, uint32_t size,
-                    uint8_t *sig, size_t slen,
-                    uint8_t key_id)
-{
-    FIH_DECLARE(fih_rc, FIH_FAILURE);
-
-    BOOT_LOG_DBG("bootutil_verify_img: ED25519 key_id %d", (int)key_id);
-
-    FIH_CALL(bootutil_verify, fih_rc, img, size, sig,
-             slen, key_id);
-
-    FIH_RET(fih_rc);
-}
-
 #endif /* MCUBOOT_SIGN_ED25519 */