Remove custom images public preview note for GA launch (#60369)

Co-authored-by: mc <42146119+mchammer01@users.noreply.github.com>

Author: dyigitbas

content/actions/how-tos/manage-runners/larger-runners/use-custom-images.md

@@ -10,8 +10,6 @@ category:
 contentType: how-tos
 ---
 
-{% data reusables.actions.custom-images-public-preview-note %}
-
 ## Custom images
 
 You can create a custom image to define the exact environment that your {% data variables.actions.github_hosted_larger_runners %} use. Custom images let you preinstall tools, dependencies, and configurations to speed up workflows and improve consistency across jobs.