Don't return OutputType::UNKNOWN in ParseOutputType

Fixes https://github.com/bitcoin/bitcoin/issues/27472

Signed-off-by: Pttn <28868425+Pttn@users.noreply.github.com>

src/outputtype.cpp

@@ -32,8 +32,6 @@ std::optional<OutputType> ParseOutputType(const std::string& type)
         return OutputType::BECH32;
     } else if (type == OUTPUT_TYPE_STRING_BECH32M) {
         return OutputType::BECH32M;
-    } else if (type == OUTPUT_TYPE_STRING_UNKNOWN) {
-        return OutputType::UNKNOWN;
     }
     return std::nullopt;
 }