If you just want to ignore all mnemonics, you can do so with [Userscript] WaniKani hide mnemonics.
Otherwise, if you don’t care about radicals OR mnemonics, you might be better off finding an Anki deck (perhaps even in your native language) to suit your needs.
*It seems that the people behind WaniKani have been working on a radical/mnemonic rewrite for a while.When it’s done, maybe things’ll be a tad easier for non-English speakers? I’m not too sure, but it’s something to look out for.