By default, there is no built-in option to remove the "Text" editor tab, and will require custom works. Alternatively, you can use the following CSS code.

Please follow the steps below:

    1. Go to BuddyBoss dashboard - Theme Options.

    2. Under Custom Codes, enable CSS.

    3. Append the following code:

.wp-editor-tools .wp-editor-tabs {
 display: none !important;
}

Note: Any modifications are considered custom work already. Know more about our Support policy here: https://www.buddyboss.com/support-policy/