Cannot delete useless "The Source" bookmark

On the Samsung Internet browser, there appears to be a pre-installed bookmark called The Source, which is a link to http://how-to.tmobile.com/. Not only is the link completely dead and therefore useless, but it appears that I cannot even delete this useless bookmark at all!

While I understand I could just use a different browser, I do prefer the Samsung browser, and regardless of the fact, it's the principle that I should be able to delete whatever bookmark I want. I am also aware of Android's debugging tools, and disabling what I thought were the two packages responsible for managing this bookmark does not appear to work.

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