Delete the useless file

study.php

-<?php
-$br = (php_sapi_name() == "cli")? "":"<br>";
-
-if(!extension_loaded('study')) {
-	dl('study.' . PHP_SHLIB_SUFFIX);
-}
-$module = 'study';
-$functions = get_extension_funcs($module);
-echo "Functions available in the test extension:$br\n";
-foreach($functions as $func) {
-    echo $func."$br\n";
-}
-echo "$br\n";
-$function = 'confirm_' . $module . '_compiled';
-if (extension_loaded($module)) {
-	$str = $function($module);
-} else {
-	$str = "Module $module is not compiled into PHP";
-}
-echo "$str\n";
-?>