@levistensils
Removing date and time stamp for each post cannot be done unless you [purchase a CSS editing upgrade, do the work yourself indicated in the post linked to above, and renew the upgrade annually.
Since there is no official Staff support for the CSS upgrade, and precious little Volunteer support, I recommend that you don’t buy the upgrade unless you have at least moderate understanding of HTML and CSS because you must be prepared to do the work on your own. If you are considering purchasing the upgrade, you can go to Appearance > Edit CSS. There wordpress has provided a preview function where you can try before you buy.
http://en.support.wordpress.com/custom-css/
http://en.support.wordpress.com/editing-css/