I was told that I needed to Reset my iPhone 4. All of the Photos that were stored on my laptop in folders were transferred to the iPhone. My storage capacity on the phone is now maxed out, and I do not want these folders on the phone. What is the process?

I was told at an Apple store that I needed to go into iTunes to control the content that gets pushed to the iPhone. I can not locate any photo folders in the iTunes account? Is there something basic here I am not understanding? As I said, this was not a problem until I was told to reset my phone, and all of the photo content from my laptop was entered onto the storage in the phone. Now there is no room for other content. I want to delete these folders from the iPhone.

Please help,

robk49