Easy enough to do using CSS. Does your theme have an option to add custom CSS? If not, you can use a CSS stylesheet plugin like Lazyest Stylesheet or Custom CSS Manager.
/* Hide the breadcrumb bar and the post's meta bar */
.breadcrumb-trail.breadcrumbs,
.entry-footer .entry-meta {
display: none;
}
/* Add a little spacing to the top of the content since the breadcrumb bar is no longer there */
#content {
margin-top: 25px;
}