How do I disable activity stream all module

Hi all,

I checked in sugar and found that many place always enable activity stream and in activities table has many many records. I want to get rid of it.

'activity_enabled' => true,

Is it possible ?

How do I disable activity all module?

List of files that enabled activities:

./modules/Accounts/vardefs.php
./modules/Bugs/vardefs.php
./modules/Calls/vardefs.php
./modules/Campaigns/vardefs.php
./modules/Cases/vardefs.php
./modules/Contacts/vardefs.php:   
./modules/Contracts/vardefs.php:   
./modules/Emails/vardefs.php:    
./modules/Leads/vardefs.php:   
./modules/Meetings/vardefs.php
./modules/ModuleBuilder/MB/MBModule.php
./modules/ModuleBuilder/tpls/MBModule/vardef.tpl
./modules/Notes/vardefs.php
./modules/Opportunities/vardefs.php
./modules/Products/vardefs.php
./modules/Quotas/vardefs.php
./modules/Tasks/vardefs.php
./modules/RevenueLineItems/vardefs.php
./modules/pmse_Inbox/vardefs.php
./modules/pmse_Emails_Templates/vardefs.php
./modules/pmse_Business_Rules/vardefs.php
./modules/pmse_Project/vardefs.php

Sugar 7.6 Ent

Thanks,

M