How can I amortize start up costs if I didn't start the company yet and only have misc. expenses not official start up costs? (won't let me delete schedule C)

So I have invested in misc. expenses for day trading that I will be starting (2018) but made purchases last year (2017) that I would like to claim. I was going to claim them as start up expenses but determined misc. to be the proper way to file, however now it will not let me delete the start up costs section and is requiring me to amortize start up costs (totaling 0) and requesting the start date which there is not one as it was not started in 2017 and hasn't yet been started still.  Should I just put whatever date in there and file with it all blank or is there a way for me to delete this other than clicking the garbage can icon (it just states we are encountering an issue and then leaves it in there.)