Removed mbedTLS internal include file

Disabled non blocking ECC from border router as there is no public API

Author: Mika Tervonen

source/Security/protocols/tls_sec_prot/tls_sec_prot_lib.c

@@ -51,8 +51,6 @@
 #include "mbedtls/debug.h"
 #include "mbedtls/oid.h"
 
-#include "mbedtls/ssl_internal.h"
-
 #define TRACE_GROUP "tlsl"
 
 #define TLS_HANDSHAKE_TIMEOUT_MIN 25000
@@ -373,13 +371,12 @@ int8_t tls_sec_prot_lib_connect(tls_security_t *sec, bool is_server, const sec_p
     // Set certificate verify callback
     mbedtls_ssl_set_verify(&sec->ssl, tls_sec_prot_lib_x509_crt_verify, sec);
 
-#ifdef MBEDTLS_ECP_RESTARTABLE
-    if (is_server_is_set) {
-        // Temporary to enable non blocking ECC */
-        sec->ssl.handshake->ecrs_enabled = 1;
-    }
-#endif
-
+    /* Currently assuming we are running fast enough HW that ECC calculations are not blocking any normal operation.
+     *
+     * If there is a problem with ECC calculations and those are taking too long in border router
+     * MBEDTLS_ECP_RESTARTABLE feature needs to be enabled and public API is needed to allow it in border router
+     * enabling should be done here.
+     */
     return 0;
 }