ISTWCMS-4704: Remove testing of layout_builder_lock
The content that was in the layout builder template is now written to the page directly so layout_builder_lock is no longer used. Revert "ISTWCMS-4705: Test layout_builder_lock" This reverts commit 5c472869. Revert "ISTWCMS-4832 Add catalog item content type to test layout builder lock." This reverts commit 41c52a26.