How to hide / remove Search box in SharePoint 2013

I wish remove Search Box in SharePoint 2013. I opened master page using SharePoint Designer 2013.

seattle.master

Using SharePoint Designer 2013 select master page from Navigation there you can see below master pages

V4.master - SharePoint 2010 MasterPage

Seattle.master - SharePoint 2013 MasterPage

Minimal.master - Search MasterPage

Oslo.master - SharePoint 2013 MasterPage

Select Seattle master, right click on that click on Edit in Advanced mode and  Ctrl + F  

find "searchInputBox" after that add style="display:none" as like below.

Now you will get without searchbox.