Deprecate mbedtls_asn1_free_named_data()

Signed-off-by: Glenn Strauss <gstrauss@gluelogic.com>
diff --git a/library/asn1parse.c b/library/asn1parse.c
index 4bc1771..28a3b14 100644
--- a/library/asn1parse.c
+++ b/library/asn1parse.c
@@ -431,6 +431,7 @@
     return( 0 );
 }
 
+#if !defined(MBEDTLS_DEPRECATED_REMOVED)
 void mbedtls_asn1_free_named_data( mbedtls_asn1_named_data *cur )
 {
     if( cur == NULL )
@@ -441,6 +442,7 @@
 
     mbedtls_platform_zeroize( cur, sizeof( mbedtls_asn1_named_data ) );
 }
+#endif /* MBEDTLS_DEPRECATED_REMOVED */
 
 void mbedtls_asn1_free_named_data_list( mbedtls_asn1_named_data **head )
 {