Delete rows in sqlite where number of rows with a number are < 1

Currently I have code that goes through my sqlite database and gets the number of rows with a number equals 1. if that is the case I delete the row with that number. It works well but I was wondering if I could do the same in sqlite only instead of doing all this looping and constant pegging of the badtadase.

here is the code I currently have

public void deleteSession(){
    ArrayList<long> numbers = getScannedNumbers();

    for(int i=0; i<numbers.size(); i++){
        int count = getRowCount(numbers.get(i).number);
        if(count == 1){
            //delete that row
        }
    }
}

getScannedNumbers returns a list of numbers (basically identifiers) from the database where a column called scan_count is > 0

getRowCount returns the number of rows that have the number as an identifier

can this be done as a single sql delete statement or is what I am doing with all the looping going to be my solution?