This commit revert some of the changes added in #27735 because wc_get_products and wc_get_orders is not fully compitable with API controller queries. Since we are close to release 4.9, its better to revert and fix them properly then rush a fix. This undones some the performance improvements we acheived in 27735, in favor of more stability, hopefully we will be able to restore this soon.
vedanshujain
Claudio Sanches