Removing back compat part 1 -- untested

removed the following deprecated functions dbx_post_advanced,
edit_categoru_form_pre, edit_link_category_form_pre,edit_tag_form_pre,
edit_link_category_form_fields,edit_tag_form_fields,edit_category_form,edit_tag_form,add_category_form_pre,add_link_category_form_pre,add_tag_form_pre,edit_category_form,edit_link_category_form,add_tag_form,deleteByIndex,find_base_dir,get_base_dir,wp_stream_image,_rotate_image_resource,_flip_image_resource,,_crop_image_resource,xfn_check,