Remove debug console.log from start-echo-server

Remove leftover debug statement that was printing the echo-server path
during test execution, causing stdout noise in test output.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: theturtle32

test/shared/start-echo-server.js

@@ -10,9 +10,7 @@ function startEchoServer(outputStream, callback) {
   }
 
   const path = require('path').join(__dirname + '/../scripts/echo-server.js');
-  
-  console.log(path);
-    
+
   let echoServer = require('child_process').spawn('node', [ path ]);
 
   let state = 'starting';