Remove composer dependency listing for built branches (#14900)

* Remove composer dependencies listing for built branches

Ref: #13497

* Improve removing composer packages listing script

Simplifying by using composer regexp capability

* Cleaning up the composer edition in the build script

tools/build-release-branch.sh

@@ -261,6 +261,12 @@ yarn cache clean
 COMPOSER_MIRROR_PATH_REPOS=1 yarn run build-production
 echo "Done"
 
+echo "Remove composer dependencies listing"
+# Workaround for https://github.com/Automattic/jetpack/issues/13497
+# TODO: Keep dependencies away from built branches and fetch them before publishing on WP-org plugins repository.
+composer remove "automattic/*" --no-update
+echo "Done"
+
 # Prep a home to drop our new files in. Just make it in /tmp so we can start fresh each time.
 rm -rf TMP_REMOTE_BUILT_VERSION
 rm -rf TMP_LOCAL_BUILT_VERSION
@@ -298,6 +304,7 @@ echo "Done! Branch $BUILD_TARGET has been updated."
 
 echo "Cleaning up the mess"
 cd $DIR
+git checkout -- composer.json
 rm -rf TMP_REMOTE_BUILT_VERSION
 rm -rf TMP_LOCAL_BUILT_VERSION
 echo "All clean!"