Removed unused AdminCommaSeparatedIntegerFieldWidget.

class AdminBigIntegerFieldWidget(AdminIntegerFieldWidget):

    class_name = 'vBigIntegerField'

class AdminCommaSeparatedIntegerFieldWidget(forms.TextInput):

    def __init__(self, attrs=None):

        final_attrs = {'class': 'vCommaSeparatedIntegerField'}

        if attrs is not None:

            final_attrs.update(attrs)

        super(AdminCommaSeparatedIntegerFieldWidget, self).__init__(attrs=final_attrs)