Marcus (aka @msykes)

This plugin removes the admin bar completely from the public and admin areas of the website. Can be used either as a normal or MU plugin.
Upon activation/installation this works immediately. Nothing fancy, the admin bar is just not loaded anymore.
<h4>BuddyPress 1.1 Onwards</h4>
You can also add the following to your wp-config.php file and then you don’t need this plugin ( sniff ;( ) :
<pre><code>define( 'BP_DISABLE_ADMIN_BAR', false );
</code></pre>

Remove BuddyPress AdminBar

This plugin removes the admin bar completely from the public and admin areas of the…

Parallelus

When activated the plugin will make the admin bar hidden from sight for signed in users, but you can still have access to the features. Simply move the cursor to the top of your website and the admin bar will appear. Now you can keep the accessibility of the WordPress admin bar without compromising the appearance of your website.
See our other plugins:
<ul>
<li><a href="https://wordpress.org/plugins/customizer-remove-all-parts/" rel="ugc">Customizer Remove All Parts</a></li>
</ul>
<a href="http://para.llel.us/#Contact" rel="nofollow ugc">Have some feedback or a suggestion? Let us know!</a>

Unobtrusive Admin Bar

Hide the admin bar for signed in users, but retain access to the features and functionality.

Remove BuddyPress AdminBar vs Unobtrusive Admin Bar