ci: drop fix/woocommerce-variation-support from integration manifest

PR OpenXE-org#266 (feature/woocommerce-batch-stock-sync) rewrites ImportSendListLager
onto products/batch + variations/batch and therefore covers the variation
support of OpenXE-org#238 as a strict superset — with a 100x reduction in request
count on top. Keeping both in the manifest produced a semantic conflict
on the stock sync code path during Pass 2.

Upstream PR OpenXE-org#238 was closed with a superseded-by note. If upstream still
chooses to merge OpenXE-org#238 first, the production rebuild can be reverted by
adding the line back.

Author: Avatarsia

.github/integration-branches.txt

@@ -35,7 +35,9 @@ feature/upgrader-ui-module
 # Mini-patches (small core touches, kept as patch branches without Bootstrap)
 feature/plz-clean
 feature/row-highlight-clean
-fix/woocommerce-variation-support
+# fix/woocommerce-variation-support -- superseded by #266 (feature/woocommerce-batch-stock-sync),
+#   which replaces ImportSendListLager with products/batch + variations/batch and therefore
+#   already covers the variation support. Upstream PR #238 was closed for the same reason.
 feature/paid-marking-clean
 mwst_korrektion