Reverts a portion of commit 344190b7.  Apparently, back in the
twentieth century we had some issues with multi-statement SQL
functions, but they've worked fine for a long time.

Daniel Westermann

Discussion: https://postgr.es/m/GVAP278MB04242DCBF5E31F528D53FA18D2A90@GVAP278MB0424.CHEP278.PROD.OUTLOOK.COM