As discussed in the SharePoint: Hide View All Site Content and Recycle Bin Post. The same instructions can be adapted to hide other unwanted SharePoint content.
Below is a selection of CSS code that can be used to “rebrand” SharePoint using a Content Editor Web Part:
<style> /* breadcrumbs */ .ms-titlearea { display: none; } /* Tabs */ .ms-banner { display: none; } /* Title Bar */ .ms-pagetitle { display: none; } /* Search function */ .ms-searchform { display: none } /* Welcome and help stuff */ .ms-globallinks { display: none } /* Remove shadings from right */ .ms-sitetitle { background-color: white } </style>