I kind of agree most of the people here. Although deleting the chapters may be the best thing to do, but deleting the chapters you uploaded here won't affect to those shameless aggregates to delete the content they've stolen in theirs. I think in this stage, it's not about ethics anymore, but what would help the source(either the English publisher or author) more. Deleting those contents that you've worked for will just redirect those readers to read at the shameless aggregates that won't even give link to the author's webpage(or the novel's syosetsu page)or the original translator that worked the script.
IF this really hurt your code of ethics and whatnot or afraid of the incoming DMCA strike, then just permit others to re-host your content(as long as they won't make some buck that isn't even theirs lol) until a month or so before the official english translation arrives.