markdown: Remove the unused file.
markdown: Remove the unused file.

ahb0327/yobi,doortts/fork-yobi,ahb0327/yobi,oolso/yobi,Limseunghwan/oss,yona-projects/yona,Limseunghwan/oss,brainagenet/yobi,doortts/forked-for-history,ahb0327/yobi,ChangsungKim/TestRepository01,doortts/fork-yobi,violetag/demo,brainagenet/yobi,bloodybear/yona,yona-projects/yona,oolso/yobi,yona-projects/yona,naver/yobi,Limseunghwan/oss,doortts/forked-for-history,naver/yobi,violetag/demo,naver/yobi,ChangsungKim/TestRepository01,doortts/fork-yobi,doortts/fork-yobi,bloodybear/yona,bloodybear/yona,yona-projects/yona,ihoneymon/yobi,doortts/forked-for-history,ihoneymon/yobi,brainagenet/yobi,oolso/yobi,bloodybear/yona,ihoneymon/yobi