OP can not delete his topics and he only have two options: lock one topic and let it at current board; or move it to Archival board and lock it.
If two topics are similarly and created by a same user, a best option is locking and moving one of two topics to Archival. Forum rules are not allowed duplicate topics too.
12. No duplicate posting in multiple boards (except for re-posting topics in the local language boards if they're translated and re-posting marketplace topics in the altcoin boards if altcoins are accepted).
We do not need to start posting off-topic discussion on this thread. Just let it be as I have posted above. Also you only post but you did not find out what I meant. Definitely you did not visit the OP topics to know that I am talking about but you just want to post.
The topics are both created on the beginners and help. Also know that they are not the same but they are just similar like what can be merged together on the same topic instead of two.
People are posting here already, the topics are not the same, so just stop posting what you do not know about.