Remove legacy range options from README (Level/community#86)

Author: vweevers

README.md

@@ -299,12 +299,6 @@ You can supply an options object as the first parameter to `createReadStream()`
 
 * `values` *(boolean, default: `true`)*: whether the results should contain values. If set to `true` and `keys` set to `false` then results will simply be values, rather than objects with a `value` property. Used internally by the `createValueStream()` method.
 
-Legacy options:
-
-* `start`: instead use `gte`
-
-* `end`: instead use `lte`
-
 <a name="createKeyStream"></a>
 ### `db.createKeyStream([options])`