rt_get_exectime didn't have to be native

- Removes a warning about 1025 (code for GET_EXECTIME) being badly used.

Signed-off-by: Shahbaz Youssefi <ShabbyX@gmail.com>
Removed unnecessary definitions

Signed-off-by: Shahbaz Youssefi <ShabbyX@gmail.com>
Merge remote-tracking branch 'origin/master'