Microsoft Word 2013 recognizes text structured as Web URLs and automatically converts them to hyperlinks by default. Although you could right-click a single URL and choose to remove the hyperlink, the solution is tedious when you have numerous links. To save time and sanity, use Word's shortcut method to simultaneously remove all hyperlinks without changing the original, unlinked text.
Eradicate All Hyperlinks
Press "Ctrl-A" to highlight the entire Word document. If you want to remove all the links in only a portion of the document, click and drag your mouse to highlight the relevant text. Press "Ctrl-Shift-F9" to remove the hyperlinks. This shortcut won't subsequently restore links, but if you change your mind, immediately pressing "Ctrl-Z" undoes the last change to the document, including link removal.
Stopping the Default Behavior
If you'd rather Word not automatically create hyperlinks, adjust the settings to prevent it from doing so. Click "File | Options | Proofing | AutoCorrect Options | AutoFormat as You Type" and deselect "Internet and Network Paths With Hyperlinks." Click "OK." You can still manually establish links, but Word won't automatically convert typed URLs to clickable hyperlinks.