input/cdio_paranoia: drop support for libcdio-paranoia older than 10.2+0.93+1

Version 10.2+0.93+1 was released five years ago in 2014 and is the
first version to feature cdio_cddap_free_messages().  There is no way
to check the libcdio-paranoia version at compile time, so let's just
remove support for older versions instead of attempting to fix the
cdio_cddap_free_messages() check at build time.

Closes https://github.com/MusicPlayerDaemon/MPD/issues/613

src/input/plugins/CdioParanoiaInputPlugin.cxx

@@ -298,11 +298,7 @@ CdioParanoiaInputStream::Read(void *ptr, size_t length)
 				if (s_err) {
 					FormatError(cdio_domain,
 						    "paranoia_read: %s", s_err);
-#if LIBCDIO_VERSION_NUM >= 90
 					cdio_cddap_free_messages(s_err);
-#else
-					free(s_err);
-#endif
 				}
 
 				throw;