os: clean up

vlib/os/os.v

@@ -42,22 +42,6 @@ struct FileInfo {
 	size int
 }
 
-/*
-import const (
-	SEEK_SET
-	SEEK_END
-	SA_SIGINFO
-	S_IFMT
-	S_IFDIR
-	SIGABRT
-	SIGFPE
-	SIGILL
-	SIGINT
-	SIGSEGV
-	SIGTERM
-)
-*/
-
 struct C.stat {
 	st_size int
 	st_mode int
@@ -85,8 +69,6 @@ fn C.ftell(fp voidptr) int
 fn C.getenv(byteptr) byteptr
 fn C.sigaction(int, voidptr, int)
 
-fn todo_remove(){}
-
 fn init_os_args(argc int, argv &byteptr) []string {
 	mut args := []string
 	$if windows {