How can I remove content from the front page? Made page--front.tpl.php. Created the view for content-type: news for example. Then put the view block in a block region. View block - only display news type limit at 1 or 2. 

But when viewing the front page, all content types' content shows up on the front page along with the view block. I checked that it was managed by Display Suite but it shouldn't show show all contents on front page.

Why does this happen? 

Update

Uncheck "promoted to front page" checkbox on all entries and it worked. 

Other question: 

"No front page content has been created yet.
Add new content"

How can I remove this text above on front page? I am using blocks most of the time, so text shouldn't be there.
It sounds like you have your content type to "Publish to front page".  Edit your content and un-check "Promote to front page":