How to remove the "Permanent link:" tag? (when hovering)

You will have to edit your theme for that. Make a backup of the theme files before you do this.

It depends on your theme, but you can look in /wp-content/themes/yourtheme/content.php. Look for something like:

<a href="<?php the_permalink(); ?>" title="<?php echo esc_attr( sprintf( __( 'Permalink to %s', 'twentytwelve' ), the_title_attribute( 'echo=0' ) ) ); ?>" rel="bookmark"><?php the_title(); ?></a>

Change 'Permalink to %s' to just '%s'

You can of course also simply leave it as it is.

ok ty i’ll try

i can’t find content.php. There is no such a file in my theme folder

actually it’s not my site

Then I suggest you provide us with a link to your site.

roleague.tk
(ignore the posts, i’m still building and testing it)

As mentioned several times already (in other threads), you need to ask the developer of your theme for help – commercial themes are not supported here, sorry.

We do not have access to them – one reason we cannot help.