Revert "pcm/Convert: add option to enable the integer-only dsd2pcm implementation"

This reverts commit c84bae739a.  A
configuration option is not necessary, because the PcmConvert
constructor knows already whether integer or floating point is needed.

src/config/Option.hxx

@@ -79,7 +79,6 @@ enum class ConfigOption {
 	DESPOTIFY_USER,
 	DESPOTIFY_PASSWORD,
 	DESPOTIFY_HIGH_BITRATE,
-	DSD2PCM_CONVERTER,
 	MAX
 };
 

src/config/Templates.cxx

@@ -75,7 +75,6 @@ const ConfigTemplate config_param_templates[] = {
 	{ "despotify_user", false, true },
 	{ "despotify_password", false, true },
 	{ "despotify_high_bitrate", false, true },
-	{ "dsd2pcm_converter" },
 };
 
 static constexpr unsigned n_config_param_templates =