No. Not in many years. They've mostly been buried under the sand since they raised the sand level to the samer height as the boardwalk. According to the Parks Dept website the nearest ones left are at Asser Levy Park on W 5 st. and a the Luna Park playground for entering before the beaches.
New York City Department of Parks & Recreation (http://gis.nyc.gov/parks/lc/NYCParkMapIt.do - broken link)
And the following are active on the boardwalk:
Coney Island Beach & Boardwalk Facilities - Bathrooms : New York City Department of Parks & Recreation
But there is no guarantee on their conditions.