remove commented code

Author: fanoush

examples/rtt/web.html

@@ -120,13 +120,10 @@
             const printable = !ev.altKey && !ev.ctrlKey && !ev.metaKey;
 
             if (ev.keyCode === 13) { // process newline
-                // allow empty lines too
-                // if (line_input.length) {
-                    term.write('\r\n');
-                    cmd = line_input + "\r\n";
-                    console.log('sending: \"' + line_input + '\"');
-                    line_input = "";
-                //}
+                term.write('\r\n');
+                cmd = line_input + "\r\n";
+                console.log('sending: \"' + line_input + '\"');
+                line_input = "";
             } else if (ev.keyCode === 8) { // process backspace
                 if (term._core.buffer.x > 0) {
                     term.write('\b \b');