Remove last var_export statements

Got overlooked while refactoring

src/Handlebars/Arguments.php

@@ -145,7 +145,7 @@ class Arguments
                 throw new \InvalidArgumentException(
                     sprintf(
                         'Malformed arguments string: "%s"',
-                        var_export($args_string, true)
+                        $args_string
                     )
                 );
             }

src/Handlebars/Parser.php

@@ -81,7 +81,7 @@ class Parser
                             throw new \LogicException(
                                 sprintf(
                                     'Unexpected closing tag: /%s',
-                                    var_export($token[Tokenizer::NAME], true)
+                                    $token[Tokenizer::NAME]
                                 )
                             );
                         }