hi hip rock

Yes there is a way for you to remove them.

First. Go to your folder skin (ex. evopress)
edit the file single.main.php

look and remove the following:

				<?php
					$Item->issue_time( array(
							'before'      => /* TRANS: date */ T_('This entry was posted on '),
							'time_format' => 'F jS, Y',
						) );
				?>
				<?php
					$Item->issue_time( array(
							'before'      => /* TRANS: time */ T_('at '),
						) );
				?>
				<?php
					$Item->author( array(
							'before'      => T_('by '),
						) );
				?>
				<?php
					$Item->categories( array(
						'before'          => ' '.T_('and is filed under').' ',
						'after'           => '.',
						'include_main'    => true,
						'include_other'   => true,
						'include_external'=> true,
						'link_categories' => true,
					) );
				?>

It's up to you if you what portion you want to remove. just read the code