[pygobject] Drop old ChangeLog.pre-2.18

[Martin Pitt <martinpitt src gnome org>]

commit dceb4d60e210cb1531ad81935733a3f0be0c8edb
Author: Martin Pitt <martinpitt gnome org>
Date:   Wed Oct 24 08:40:50 2012 +0200

    Drop old ChangeLog.pre-2.18
    
    This is ancient by now, quite sizable, and the complete history can always be
    seen in the git log.

 ChangeLog.pre-2.18 | 3608 ----------------------------------------------------
 Makefile.am        |    1 -
 2 files changed, 0 insertions(+), 3609 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 2fb8783..44623a1 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -9,7 +9,6 @@ CLEANFILES = \
 	`find "$(builddir)" -type f -name "*.pyc" -print`
 
 EXTRA_DIST = \
-	ChangeLog.pre-2.18 \
 	pygobject-$(PLATFORM_VERSION).pc.in \
 	PKG-INFO \
 	PKG-INFO.in \