Drop reference to Visual Studio 2013 from config

All supported versions of Visual Studio support AESNI, so drop the
version number.

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
diff --git a/include/mbedtls/mbedtls_config.h b/include/mbedtls/mbedtls_config.h
index 7cf4153..df9745a 100644
--- a/include/mbedtls/mbedtls_config.h
+++ b/include/mbedtls/mbedtls_config.h
@@ -2211,7 +2211,7 @@
  * Enable AES-NI support on x86-64 or x86-32.
  *
  * \note AESNI is only supported with certain compilers and target options:
- * - Visual Studio 2013: supported.
+ * - Visual Studio: supported
  * - GCC, x86-64, target not explicitly supporting AESNI:
  *   requires MBEDTLS_HAVE_ASM.
  * - GCC, x86-32, target not explicitly supporting AESNI: