Hm… I recall these scenes. I'm working from memory, so I could be wrong.
Dana Deleted Scene - More gabbing between Venkman and Dana.
Honey Mooners Deleted Scene - the scene where two honey mooners find Slimer stinking up their bathroom (Slimer's appearance is merely teased)
Winston Deleted Scene - Winston is asked a round of questions by Janine during his interview.
Bums Deleted Scene - Bill Murray and Dan Akroyd play two bums who discuss topics such as whether a good karate guy can beat a good boxing guy and the year's best travel bargains while walking in Central Park. They encounter Louis, who is currently under the guise of the Keymaster.
Promotion Deleted Scene - Winston expresses doubt about facing Gozer. Venkman quips about how he was going to give Winston a promotion until he made that remark.
Hat Deleted Scene - After Stay Puft's defeat, his hat falls to ground. Really cheesy.
No Louis Deleted Scene - The GBs notice Louis has escaped in the confusion after the Containment Unit is shut down.
Dean Yeager Scene - more footage of the GBs getting served their eviction notice by Dean Yeager.
Mayor Scene - Before the battle with Gozer and the convoy with the Ghostbusters sets out, Ray and Peter have a conversation with the Mayor about what's going on. Stantz talks about how this might be nature's way of telling them to slow down.
Spengler Scene - Janine gives Spengler a lucky coin she got at the World's Fair.
Louis Scene 2 - After Louis returns to his right form he thinks something happened between he and Dana. Stanz convinces him otherwise.
Peck scene - Walter Peck tries to convince the officer to the arrest the GB's as they're battling on the Shandor building.
I'm not sure if the Keymaster scene where he uses the power of bad breath to ward off some muggers he's confronted with is there.