Remove unussed classNames (#428)

Author: IvanGoncharov

src/components/settings/RootSelector.tsx

@@ -37,7 +37,6 @@ export default function RootSelector(props: RootSelectorProps) {
     <Select
       fullWidth
       variant="standard"
-      className="root-selector"
       onChange={({ target }) => onChange(target.value)}
       value={rootType}
     >

src/components/utils/SearchBox.tsx

@@ -28,7 +28,6 @@ export default function SearchBox(props: SearchBoxProps) {
         value={value}
         onChange={(event) => setValue(event.target.value)}
         type="text"
-        className="search-box"
         endAdornment={
           value && (
             <InputAdornment position="end">