Delete duplicate types

src/header/aio/mod.rs

src/header/arpa_inet/mod.rs

src/header/dirent/mod.rs

src/header/netdb/mod.rs

src/header/pwd/mod.rs

src/header/signal/mod.rs

src/header/stdlib/mod.rs

src/header/sys_ioctl/mod.rs

src/header/sys_resource/mod.rs

src/header/sys_select/cbindgen.toml

src/header/sys_select/mod.rs

src/header/sys_socket/mod.rs

src/header/sys_stat/mod.rs

src/header/sys_time/mod.rs

src/header/sys_times/mod.rs

src/header/sys_utsname/mod.rs

src/header/termios/mod.rs

src/header/time/mod.rs

src/header/unistd/mod.rs

src/header/utime/mod.rs