Cleanup - Remove unused images from static/img/

[kimsauce]

Purpose of this pull request

Reviewers, this will only need a spot check, as there are so many files. To spot check, you could cross-check the deleted files list with the Google Sheets file here.

This PR removes unused image assets from the static/img/ directory to streamline the repo, reduce site build times, reduce repo size and clutter, minimize the chance of stale or duplicated assets.

What was done. Identified unused images by comparing all files in static/img/ against references in:

• Markdown and MDX files (docs/)
• JSX/TSX/JS/TS files (src/, pages/, etc.)
• docusaurus.config.js and other config files
• Verified that flagged images were not used in any documentation or UI source files
• Removed 1000+ unused image files based on this validation

Note for contributors. To avoid image duplication in the future, please upload once and reference them wherever needed. No need to duplicate across subfolders.

Select the type of change

• Minor Changes - Typos, formatting, slight revisions
• Update Content - Revisions, updating sections
• New Content - New features, sections, pages, tutorials
• Site and Tools - .clabot, version updates, maintenance, dependencies, new packages for the site (Docusaurus, Gatsby, React, etc.)

Ticket (if applicable)

https://sumologic.atlassian.net/browse/DOCS-481