Remove outdated checks for empty braced struct expressions (i.e. `UnitStruct {}`).
Remove outdated checks for empty braced struct expressions (i.e. `UnitStruct {}`).

graydon/rust,GBGamer/rust,aidancully/rust,GBGamer/rust,graydon/rust,GBGamer/rust,graydon/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,graydon/rust,aidancully/rust,GBGamer/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust