don't know if I don't understand the structure of Macs well enough but I can not find the plist to remove.
Click a clear space on your Desktop. You'll see Finder top left corner of the screen.
From that menu bar click Go > Go to Folder
Type this in exactly as you see it here: ~/Library/Safari
That will open a Finder window for you.
Move the Bookmarks.plist file to the Desktop.
That should remove all the Bookmarks from Safari.
If you want to re import those Bookmarks at some point, with Safari open, from the menu bar click File > Import Bookmarks.
BTW... when you are searching the Finder there are two libraries. One is root the other is user.
The ~ (Tilde) character represents user: ~/Library
No tilde: /Library is root
Does that award points?
Yes you did. See where it says: Correct Answer in your first post. Green is 10 points, Helpful is 5.
On that page there's a link that says: All Tutorials