doc: remove xreflabels used in PG 13 relnotes

Bruce Momjian <bruce@momjian.us>

Commit: db680fd82ede99d9a5224a1d316a64d763be1acc
Author: Bruce Momjian <bruce@momjian.us>
Date: 2020-06-11T22:27:59Z
Releases: 13.0
doc:  remove xreflabels used in PG 13 relnotes

xreflabels were removed in a previous commit

Discussion: https://postgr.es/m/8315c0ca-7758-8823-fcb6-f37f9413e6b6@2ndquadrant.com

Backpatch-through: 13 only

Files

PathChange+/−
doc/src/sgml/release-13.sgml modified +85 −72

Documentation touched