[AnkisethGallant]

I think what you're looking for is in the postbit template.

There is a certain section that is a bit over halfway through that looks like:

<if condition="$show['postedited']">
		<!-- edit note -->
			<div class="smallfont">			<hr size="1" style="color:$stylevar[tborder_bgcolor]" />
				<em>
				<phrase 1="$post[edit_username]" 2="$post[edit_date]" 3="$post[edit_time]">$vbphrase[last_edited_by_x_on_y_at_z]</phrase>.
				<if condition="$post['edit_reason']">$vbphrase[reason]: $post[edit_reason]</if>
				</em>
			</div>
		<!-- / edit note -->
		</if>

Seems to me if you remove that entire section of code then no edited remarks will show up. Not 100% sure, but it looks like that should do the trick.