Release : 14.3, 14.2,
Component : Identity Portal (Identity Management Suite)
If you are just interested in disabling a users access to the Analytics feature:
Login to the Portal Management Console
click on elements
profiles (on left side)
Under features tab uncheck analytics.
This will remove the Analytics icon from being displayed on a user or group of users Portal.
If you are interested in disabling Analytics for the entire environment:
Log into the Portal Portal Management Console
Click Setup tab.
Select Analytics - Uncheck Enable analytics
This will disable Analytic collection for the entire Portal environment.