The procedure to remove all hyperlinks from a Word document is quite straightforward but a well-kept secret.
This annoying behaviour often happens when you copy and paste text from a website. There is a simple way to remove all hyperlinks from word file.
Remove all hyperlinks from a Word document at once:
Select all of your text by pressing Ctrl+A
All hyperlinks will be removed at once and you should be left with plain un-linked text.
Another trick I use to remove hyperlinks (and any other formatting) is to paste the copied text into Notepad. Copy the text again and then paste it into anywhere you want (Word, WordPress etc).