Backport PR #40880: DOC: 1.2.4 release date (#40894)

Co-authored-by: Simon Hawkins <simonjayhawkins@gmail.com>

Author: meeseeksmachine

doc/source/whatsnew/v1.2.4.rst

@@ -1,7 +1,7 @@
 .. _whatsnew_124:
 
-What's new in 1.2.4 (April ??, 2021)
----------------------------------------
+What's new in 1.2.4 (April 12, 2021)
+------------------------------------
 
 These are the changes in pandas 1.2.4. See :ref:`release` for a full changelog
 including other versions of pandas.
@@ -24,26 +24,6 @@ Fixed regressions
 
 .. ---------------------------------------------------------------------------
 
-.. _whatsnew_124.bug_fixes:
-
-Bug fixes
-~~~~~~~~~
-
--
--
-
-.. ---------------------------------------------------------------------------
-
-.. _whatsnew_124.other:
-
-Other
-~~~~~
-
--
--
-
-.. ---------------------------------------------------------------------------
-
 .. _whatsnew_124.contributors:
 
 Contributors