test(performance): don't eat exceptions during benchmark

Performance.php

@@ -51,11 +51,7 @@ foreach($frameworks as $framework) {
         $definitionResolver = new DefinitionResolver($index);
         $parser = new PhpParser\Parser();
 
-        try {
         $document = new PhpDocument($testCaseFile, $fileContents, $index, $parser, $docBlockFactory, $definitionResolver);
-        } catch (\Throwable $e) {
-            continue;
-        }
     }
 
     echo "------------------------------\n";