[configure] remove _BSD_SOURCE _DEFAULT_SOURCE (#4483)
[configure] remove _BSD_SOURCE _DEFAULT_SOURCE (#4483)

chshu/openthread,lanyuwen/openthread,bukepo/openthread,jwhui/openthread,chshu/openthread,librasungirl/openthread,openthread/openthread,jwhui/openthread,bukepo/openthread,bukepo/openthread,chshu/openthread,abtink/openthread,jwhui/openthread,chshu/openthread,chshu/openthread,srickardti/openthread,openthread/openthread,bukepo/openthread,lanyuwen/openthread,srickardti/openthread,lanyuwen/openthread,chshu/openthread,librasungirl/openthread,openthread/openthread,srickardti/openthread,srickardti/openthread,abtink/openthread,lanyuwen/openthread,librasungirl/openthread,librasungirl/openthread,lanyuwen/openthread,abtink/openthread,abtink/openthread,jwhui/openthread,openthread/openthread,lanyuwen/openthread