How to hide or remove the View History tab on Mediawiki

Below are the steps to remove/disable/hide the View History tab on Mediawiki. This works as of early 2016 on Mediawiki 1.26x. Hope it helps!

1. Login to your apps/mediawiki/htdocs directory. This is the directory which contains the LocalSettings.php file.
2. Edit the LocalSettings.php file (open in text editor).  Add (append) the following lines

#====Begin : code to hide/remove View Source tab from Mediawiki====
function efAddSkinStyles(OutputPage &$out, Skin &$skin) {

    if(!$skin->getUser()->isLoggedIn()) {

        if ($skin->getSkinName() == 'vector') {

            $out->addInlineStyle('#ca-history { display:none; }');

        }

    } else {

        if ($skin->getSkinName() == 'vector') {

            $out->addInlineStyle('#ca-view { display:none; }');

        }

    }

    return true;

}

$wgHooks['BeforePageDisplay'][] = 'efAddSkinStyles'; 
#====End of code====