fix: Do not log unknown commands. (#14153)

Events such as "mouse-move", "mouse-leave" and "face-landmark-detected"
reach this code and pollute the logs. It's probably worth investigating
why this is the case and fixing it if necessary, but for now just remove
the log message.

modules/API/API.js

@@ -835,8 +835,6 @@ function initCommands() {
             return true;
         }
 
-        logger.warn(`Unknown API command received: ${name}`);
-
         return false;
     });
     transport.on('request', (request, callback) => {