How can I delete rows from this query?

Here is a working query that finds all rows in my table that have duplicate City and State fields.

SELECT     *
                          (SELECT     City, State
                            FROM          CityList
                            GROUP BY City, State
                            HAVING      (COUNT(*) > 1)) AS b ON a.City = b.City AND a.State = b.State

It is returning about 100 instances in my table of duplicates.  Now I want to be able to delete rows...but in my SQL Management Studio the whole table is grayed out, It wont let me delete any of the results.  Does someone know an easy way I can delete records?  I only want one instance of any row with a particular City, State.  
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James MurrellProduct SpecialistCommented:
it may be down to permissions on your access - sorry
This keeps only one row.  But if you have permission issues, this won't work

;with tmp as (
SELECT *, ROW_NUMBER() over (partition by City, State order by city) rn
FROM CityList)
delete tmp where rn>1

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arthurh88Author Commented:
i have full permissions.  that isn't the issue.  its SQL management studio not letting me delete the rows because of the inner join.  See picture
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arthurh88Author Commented:
cells are READ ONLY
Have you tried the delete query?
James MurrellProduct SpecialistCommented:
Thanks for the picture, have you tried cyberkiwi query
arthurh88Author Commented:
i  just did and it worked!  Thank you.
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Microsoft SQL Server

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