Are the quotes appearing as text-field qualifiers? Or just noise in your file that you want to delete? Do you mean single or double quotes? I omitted to mention the possibility that you were were referring to input data containing actual quotations that should not be imported, though I can't tell for sure from your question.
You could always just provide sample data to paint the picture so much more clearly.
The absence of evidence is not evidence of absence
- Martin Rees
The absence of consumable DDL, sample data and desired results is, however, evidence of the absence of my response
- Phil Parkin