prohibit using same anti-bot hashes across different boards/threads

mod.php

@@ -1954,7 +1954,6 @@
 			$page['pages'] = getPages(true);
 			$page['pages'][$page_no-1]['selected'] = true;
 			$page['btn'] = getPageButtons($page['pages'], true);
-			$page['hidden_inputs'] = createHiddenInputs();
 			$page['mod'] = true;
 			
 			echo Element('index.html', $page);