Not sure how big 7% is for you today, or how big it may be in the grand picture of things.
Would you be willing to buy this stock in a taxable account? If so, then may as well keep it in the 401k and let it ride. Of course, don't let it become too large of a position relative to what type of risk you are willing/able to take in single stocks.
I wish I had more options in my 401k, but I also have warmed up to the idea of keeping my 401k and other IRA accounts "boring". Even if everything goes to crap and all my stocks tank, I'd like to know that my retirement is at least somewhat supported with a reasonably allocated portfolio.
Again, the amount is the biggest factor relative to your net worth. Some places would suggest no more than 3% of total assets in a single stock, but you can also project this into the near future if you are investing a lot today.
Up to you, but I see it as a risk decision rather than a return decision.