[M487] Remove mbedtls_internal_ecp_mul in ECP alter.

MbedTLS doesn't support point multiplication for MBEDTLS_ECP_INTERNAL_ALT acceleration configuration.

features/mbedtls/targets/TARGET_NUVOTON/TARGET_M480/ecp/ecp_internal_alt.c

@@ -336,47 +336,6 @@ cleanup:
     return ret;
 }
 #endif
-
-/**
- * \brief           Point multiplication R = m*P, Jacobian coordinates.
- *
- * \param grp       Pointer to the group representing the curve.
- *
- * \param R         Pointer to a point structure to hold the result.
- *
- * \param m         Pointer to MPI by which to multiply P
- *
- * \param P         Pointer to the point that has to be multiplied by m, given with
- *                  Jacobian coordinates.
- *
- * \return          0 if successful.
- *
- * \note            Currently mbedTLS doesn't open R = m*P API like this.
- *                  It is expected because ECC accelerator can improve it by 30~40 times.
- */
-int mbedtls_internal_ecp_mul_jac(mbedtls_ecp_group *grp,
-                            mbedtls_ecp_point *R,
-                            const mbedtls_mpi *m,
-                            const mbedtls_ecp_point *P)
-{
-    int ret;
-    mbedtls_ecp_point P_;
-    
-    mbedtls_ecp_point_init(&P_);
-    
-    /* P_ = normalized P */
-    MBEDTLS_MPI_CHK(mbedtls_ecp_copy(&P_, P));
-    MBEDTLS_MPI_CHK(mbedtls_internal_ecp_normalize_jac(grp, &P_));
-        
-    /* Run ECC point multiplication: R = m*P */
-    MBEDTLS_MPI_CHK(internal_run_eccop(grp, R, m, &P_, NULL, NULL, ECCOP_POINT_MUL));
-
-cleanup:
-
-    mbedtls_ecp_point_free(&P_);
-
-    return ret;
-}
              
 #if defined(MBEDTLS_ECP_NORMALIZE_JAC_ALT)
 /**