fix(matcher): remove unused params

fix(matcher): remove unused params

Fix #1497

NOTES: if you were relying on passing `params` that were not defined as
part of the `path`, eg: having a route defined as follows:

```js
{
  path: '/somewhere',
  name: 'somewhere'
}
```

And pushing with an _artificial_ param:

```js
router.push({ name: 'somewhere', params: { oops: 'gets removed' }})
```

This change will break your app. This behavior has worked in some
scenarios but has been **advised against** for years as it's an
antipattern in routing. You can still put the data in `query` or as an
actual param.