remove trailing ;

Summary:
Latest clang reported `-Wextra-semi` in `BOOST_MPL_HAS_XXX_TRAIT_DEF` uses with the trailing `;`. Codemod them away before the upgrade.
```lang=bash
fbgr -sl 'BOOST_MPL_HAS_XXX_TRAIT_DEF\(.*\);$' | xargs perl -pi -e 's,(BOOST_MPL_HAS_XXX_TRAIT_DEF\(.*\));$,\1,'
```

Reviewed By: yfeldblum

Differential Revision: D7383619

fbshipit-source-id: f7f9415617cf6d4a876ebe8bf782d0115cd01c23

folly/DynamicConverter.h

@@ -56,10 +56,10 @@ namespace folly {
 
 namespace dynamicconverter_detail {
 
-BOOST_MPL_HAS_XXX_TRAIT_DEF(value_type);
-BOOST_MPL_HAS_XXX_TRAIT_DEF(iterator);
-BOOST_MPL_HAS_XXX_TRAIT_DEF(mapped_type);
-BOOST_MPL_HAS_XXX_TRAIT_DEF(key_type);
+BOOST_MPL_HAS_XXX_TRAIT_DEF(value_type)
+BOOST_MPL_HAS_XXX_TRAIT_DEF(iterator)
+BOOST_MPL_HAS_XXX_TRAIT_DEF(mapped_type)
+BOOST_MPL_HAS_XXX_TRAIT_DEF(key_type)
 
 template <typename T> struct iterator_class_is_container {
   typedef std::reverse_iterator<typename T::iterator> some_iterator;