[fix](trx-backend-ft817): hide unsupported decode modes

Remove SDR-only decoder modes from the FT-817 supported mode list so they are not shown in that rig's mode picker.

Co-authored-by: Stan Grams <sjg@haxx.space>
Signed-off-by: Stan Grams <sjg@haxx.space>

src/trx-server/trx-backend/trx-backend-ft817/src/lib.rs

@@ -195,8 +195,6 @@ impl Ft817 {
                     RigMode::AM,
                     RigMode::WFM,
                     RigMode::FM,
-                    RigMode::AIS,
-                    RigMode::VDES,
                     RigMode::DIG,
                     RigMode::PKT,
                 ],