remove a duplicated line

Signed-off-by: Takashiro <takashiro@qq.com>
avoid copying a new object
remove an unused parameter from Countdown

Signed-off-by: Takashiro <takashiro@qq.com>
remove an unused arg from MOVEFOCUS command

Signed-off-by: Takashiro <takashiro@qq.com>
reduce data flow

Signed-off-by: Takashiro <takashiro@qq.com>
avoid copying new objects

Signed-off-by: Takashiro <takashiro@qq.com>