Fix extraneous props

Remove props from Slider that has something to do with incorrectly setting `orientation` to a `div`-like element.

Also, we fix the import in the Icon test.

lib/components/Icon/Icon.test.tsx

@@ -2,7 +2,7 @@ import * as fc from 'fast-check'
 import * as Enzyme from 'enzyme'
 import * as React from 'react'
 import * as FeatherIcon from 'react-feather'
-import { paramCase } from 'param-case'
+import paramCase from 'param-case'
 import Icon from './Icon'
 
 const FEATHER_ICONS = Object.keys(FeatherIcon).map((k) => paramCase(k))

lib/components/Slider/Slider.tsx

@@ -289,7 +289,6 @@ const Slider: React.FC<Props> = ({
           </SizingWrapper>
           <Base
             {...etcProps}
-            orientation={orientation!}
             disabled={disabled!}
             style={{
               [parallelDimension]: length,