The sentence that should have commas removed from its restrictive phrase is:
That guy, who is admittedly quite funny, is brave to wear a bowtie.
In this case, "who is admittedly quite funny" is a non-restrictive clause and does use commas correctly. However, if you meant to inquire about removing commas from a restrictive phrase, none of the examples provided necessitate this adjustment.
Just to clarify:
- A restrictive clause (or phrase) provides essential information to identify the noun it modifies and should not be set off by commas.
- A non-restrictive clause adds non-essential information and should be set off by commas.
If you're looking for a specific sentence with a restrictive clause needing punctuation changes, none of the examples fit that criteria.