remove obsolete file

src/server/test.html

@@ -1,11 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>Document</title>
-</head>
-<body>
-    New test
-</body>
-</html>