From this reference you get the following info:
Function and Method Cross Reference
bb_profile_data()
Defined at:
/bb-includes/functions.bb-template.php -> line 2405
Referenced 1 times:
/bb-templates/kakumei/profile.php -> line 30
so you should check your profile template.
If you have ssh access to your site, try
# grep "bb_profile_data" -R /the/path/to/your/site/
in the shell command line, to search for the bb_profile_data string in all the files within the /the/path/to/your/site/ directory.
Update:
In bbPress 2.3.2 you seems to have instead:
<p class="bbp-user-forum-role"><?php printf( __( 'Forum Role: %s', 'bbpress' ), bbp_get_user_display_role() ); ?></p>
<p class="bbp-user-topic-count"><?php printf( __( 'Topics Started: %s', 'bbpress' ), bbp_get_user_topic_count_raw() ); ?></p>
<p class="bbp-user-reply-count"><?php printf( __( 'Replies Created: %s', 'bbpress' ), bbp_get_user_reply_count_raw() ); ?></p>
in the file /plugins/bbpress/templates/default/bbpress/user-profile.php to display the topics and replies count. You can view the source here.