To remove the option to have comments for the article you can in Sources/TPortalAdmin.php find this section:
// are we starting a new one?
if(isset($_GET['sa']) && substr($_GET['sa'], 0, 11) == 'addarticle_')
{
TPadd_linktree($scripturl.'?action=tpadmin;sa='.$_GET['sa'], $txt['tp-addarticle']);
$context['TPortal']['editarticle'] = array(
'id' => '',
'date' => time(),
'body' => '',
'intro' => '',
'useintro' => 0,
'category' => !empty($_GET['cu']) ? $_GET['cu'] : 0,
'frontpage' => 1,
'author_id' => $context['user']['id'],
'subject' => '',
'author' => $context['user']['name'],
'frame' => 'theme',
'approved' => 0,
'off' => 1,
'options' => 'date,title,author,linktree,top,cblock,rblock,lblock,bblock,tblock,lbblock,category,catlist,comments,commentallow,commentupshrink,views,rating,ratingallow,avatar,inherit,social,globaltags,nofrontsetting',
Remove in the options line at the bottom of that the commentallow part so the line looks like this:
'options' => 'date,title,author,linktree,top,cblock,rblock,lblock,bblock,tblock,lbblock,category,catlist,comments,commentupshrink,views,rating,ratingallow,avatar,inherit,social,globaltags,nofrontsetting',
You can remove any of those other options from that line if you need. This will make it so that the options are not automatically checked.
It's not possible to turn off individual social icons off per site. You can remove any that you don't want by editing the TPsubs.template.php file in the default theme folder. Look for the article_bookmark() function where each image is put in the code there.