Empty styles object are not getting deleted

Suppose the style:

`const styles = StyleSheet.create({
header: {
paddingTop: 15,
flexDirection: 'row',
height: 40,
backgroundColor: '#D8D8D8'
},
headerLabel: {
marginLeft: 16,
fontFamily: 'Roboto-Medium',
color: 'rgba(0, 0, 0, 0.4)',
fontSize: 14,
},
headerImage: {
color: 'rgba(0, 0, 0, 0.4)',
position: 'absolute',
right: 16,
}
});`

After fixing it with the tool(suppose all of the styles are not used) the code becomes:

`const styles = StyleSheet.create({
});`

which is meaningless.

Would be great to have this thing removed as well(in case no references to styles are made).

Reproduce the reported example where unused styles leave an empty StyleSheet.create object, then trace the cleanup tool's handling of the containing styles declaration. Done means the declaration is removed when no style references remain, rather than leaving an empty object; the payload names no source file or test to run.

Written by the indexing model from the issue text.