commit 91171370514b558ea7f0ae34af7503ddb31d68e6
Author: Juergen E. Fischer <jef@norbit.de>
Date:   Sun Aug 20 10:51:52 2017 +0200

    remove sip workaround (fixes #17038, refs #16071)

diff --git a/python/core/qgscoordinatetransform.sip b/python/core/qgscoordinatetransform.sip
index f9b7854..464952d 100644
--- a/python/core/qgscoordinatetransform.sip
+++ b/python/core/qgscoordinatetransform.sip
@@ -15,7 +15,6 @@
 class QgsCoordinateTransform : QObject
 {
 %TypeHeaderCode
-extern PyObject *sipExportedExceptions__core[2];  // workaround: sipExportedExceptions__core is only defined in the first sip part
 #include <qgscoordinatetransform.h>
 %End