Remove a line of unreachable code.

Was identical to the "else" immediately above it.

dns/dns.go

@@ -101,7 +101,6 @@ func ParseName(s string) (Name, error) {
 	} else {
 		return NewName(bytes.Split(b, []byte(".")))
 	}
-	return NewName(bytes.Split(b, []byte(".")))
 }
 
 // String returns a string representation of name, with labels separated by