[types] remove unused CONTAINING_RECORD macro (#2482)
[types] remove unused CONTAINING_RECORD macro (#2482)


srickardti/openthread,mszczodrak/openthread,librasungirl/openthread,gandreello/openthread,chshu/openthread,pvanhorn/openthread,mszczodrak/openthread,jwhui/openthread,srickardti/openthread,abtink/openthread,chshu/openthread,srickardti/openthread,erja-gp/openthread,mszczodrak/openthread,mszczodrak/openthread,gandreello/openthread,georgecpr/openthread,gandreello/openthread,chshu/openthread,jwhui/openthread,chshu/openthread,bukepo/openthread,georgecpr/openthread,pvanhorn/openthread,georgecpr/openthread,erja-gp/openthread,abtink/openthread,erja-gp/openthread,erja-gp/openthread,LeZhang2016/openthread,openthread/openthread,pvanhorn/openthread,georgecpr/openthread,srickardti/openthread,erja-gp/openthread,gandreello/openthread,lanyuwen/openthread,librasungirl/openthread,chshu/openthread,turon/openthread,pvanhorn/openthread,bukepo/openthread,librasungirl/openthread,lanyuwen/openthread,abtink/openthread,gandreello/openthread,lanyuwen/openthread,bukepo/openthread,turon/openthread,chshu/openthread,erja-gp/openthread,openthread/openthread,lanyuwen/openthread,lanyuwen/openthread,openthread/openthread,LeZhang2016/openthread,pvanhorn/openthread,jwhui/openthread,openthread/openthread,turon/openthread,turon/openthread,LeZhang2016/openthread,LeZhang2016/openthread,bukepo/openthread,lanyuwen/openthread,mszczodrak/openthread,abtink/openthread,jwhui/openthread,georgecpr/openthread,georgecpr/openthread,librasungirl/openthread,LeZhang2016/openthread,pvanhorn/openthread,gandreello/openthread,LeZhang2016/openthread,mszczodrak/openthread