There are two simple ways to remove the password from a PDF file, one of which works no matter what software you have.
You can delete pages from a PDF on a Mac using the Preview app. You can also add pages to a PDF in two ways with Preview.
In the top menu of Excel select Data > Get Data > From File > From PDF. Browse your files and select the PDF with the table in it. Now select Import. Choose the table from the list that appears and ...