Hide friends [keep friends links]
This code will hide your friends but keep the view all friends link.

Paste this code anywhere in your edit profile section.
<style type="text/css"> td.text td.text table table table, td.text td.text table br {display:none;}td.text td.text table {background-color:transparent;}.r{}td.text td.text table table br {display:inline;} </style>

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Hide entire friends area
This code will hide your top friends

<style type="text/css">td.text td.text table table table,td.text td.text table br,td.text td.text table .orangetext15,td.text td.text .redlink,td.text td.text span.btext{display:none;}td.text td.text table {background-color:transparent;}td.text td.text table td, td.text td.text table {height:0;padding:0;border:0;}td.text td.text table table td {padding:3;}td.text td.text table table br {display:inline;}td.text td.text table td {font-size:0pt;}td.text td.text {height:0;}td.text td.text table b, td.text td.text table table td {font-size:8pt;}</style>

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Hide top friend's names
This code will hide your top friends names

<style type="text/css">table table table table table table a {visibility:hidden;}table table table table table table a img {visibility:visible;}</style>

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Hide top friend's pictures
This code will hide your top friends pictures

<style type="text/css">table table table table table table a img {display:none;}</style>