PHP pear本体をアンインストールする

pearを入れてしまい、不要になった際の削除方法

# which pear
/usr/bin/pear

# pear list
Installed packages, channel pear.php.net:
=========================================
Package          Version State
Archive_Tar      1.2.11  stable
Console_Getopt   1.1.1   stable
PEAR             1.8.4   stable
Structures_Graph 1.0.1   stable
XML_Util         1.1.1   stable


# pear uninnstall PEAR

# which pear
no package