Remove useless code left from old implementation

Author: ste93cry

lib/PhpParser/Lexer.php

@@ -85,7 +85,6 @@ public function startLexing(string $code, ErrorHandler $errorHandler = null) {
 
         $scream = ini_set('xdebug.scream', '0');
 
-        error_clear_last();
         $this->tokens = @token_get_all($code);
         $this->postprocessTokens($errorHandler);