Remove widgets within the theme.

Open up your theme’s style.css

Replace the declaration in #header a.twitter below

#header a.twitter {
background:transparent url(images/nav-icons.png) no-repeat scroll left top;
right:85px;
}

to
#header a.twitter { display: none; }

At the bottom of your style.css add this line
#instance-twitterwidget-3 { display: none; }

Close and save style.css and upload to your theme’s folder. You’re good to go.

At the bottom of your style.css add this line
#instance-twitterwidget-3 { display: none; }

… will make your latest tweets disappear. Please note that I am basing these instructions on the theme author’s demo page. I don’t know if you made any styles in your website. If you want your site checked out then post your site URL here.

Ok, add at the bottom of your style.css:
.block-twitter { display: none; ]

Btw, while the above styling will hide that block, have you tried disabling the twitter widget in dashboard Appearance > Widgets
OR if the theme has an options page at dashboard Appearance > Theme Options, you might be able to disable that widget there.

Peace out 🙂