docs: remove Gordon usage limits content

Usage limits information is no longer accurate or needed in the Gordon
docs. Deleted usage-and-limits.md, removed the "Usage and availability"
section from the index page, and removed the "Set usage limits by
subscription tier" bullet from the data-privacy page.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: dvdksn

content/manuals/ai/gordon/_index.md

@@ -116,13 +116,3 @@ Image management:
 ```console
 $ docker ai "list my local images and their sizes"
 ```
-
-## Usage and availability
-
-Gordon is available with all Docker subscriptions. Usage limits vary by tier:
-
-- Personal: Baseline usage
-- Pro and Team: 3x more usage than Personal
-- Business: 6x more usage than Personal
-
-For details, see [Usage and limits](./usage-and-limits/).

content/manuals/ai/gordon/concepts/data-privacy.md

@@ -77,7 +77,6 @@ organization using Settings Management.
 Available controls:
 
 - Enable or disable Gordon for the organization
-- Set usage limits by subscription tier
 
 Administrators should review their organization's data handling requirements
 before enabling Gordon.