Revert "Pin TinyIPA images to stable/2024.2"

This reverts commit f2a9daa.

Reason for revert: TinyIPA images from master are working again

Change-Id: Ibef45fad608eecf76c398339a9c21a5cf7ba3b15

Author: priteau

etc/kayobe/ipa.yml

@@ -79,8 +79,7 @@
 
 # Suffix of upstream Ironic deployment image files. Default is based on
 # {{ openstack_branch }}.
-# TODO(priteau): Remove once master images are working again
-ipa_images_upstream_url_suffix: "-stable-2024.2"
+#ipa_images_upstream_url_suffix:
 
 # Name of Ironic deployment kernel image to register in Glance.
 #ipa_images_kernel_name: