Although Adobe Acrobat is not strictly a text-editing program, it does include tools that allow you to edit text from an editable PDF document. Using the program’s advanced editing functions, you can highlight and delete text from a PDF without having to convert it back into a text document.
Open the “Tools” menu from the menu bar at the top of the Acrobat window and select “Advanced Editing” > "Touchup Text Tool.”
Locate the text you want to delete from your document. Click and drag over it to highlight it.
Press the “Backspace” key. A progress bar will appear briefly, and the text you highlighted will disappear from your PDF document. Save your work.