You can add following code to theme’s functions.php file.
function bbp_img_without_title( $attachments ) { ?>
<div class="shr-reply-attach"><?php
foreach( $attachments as $attachment ) {
$attach = wp_get_attachment_image_src( $attachment->ID , 'thumbnail' );
$attach_full = wp_get_attachment_image_src( $attachment->ID, 'full' );
?>
<a href="<?php echo $attach_full[0]; ?>" class="thickbox bbp-uploader-thumb">
<img src="<?php echo $attach[0] ?>" alt="<?php echo $attachment->post_title; ?>" />
</a><?php
} ?>
</div><?php
}
add_action( 'bbp_uploader_attachments_markup', 'bbp_img_without_title' );
Hope this helps.
Regards,
Ankit
