[pygobject] Remove pygobject-external.h

[Christoph Reiter <creiter src gnome org>]

commit ff1a6f0f00e042c5addfa42231ec8927ebf1a1a6
Author: Christoph Reiter <creiter src gnome org>
Date:   Tue May 31 19:26:00 2016 +0200

    Remove pygobject-external.h
    
    It's not used any more
    
    https://bugzilla.gnome.org/show_bug.cgi?id=767084

 gi/Makefile.am          |    1 -
 gi/pygobject-external.h |   73 -----------------------------------------------
 2 files changed, 0 insertions(+), 74 deletions(-)
---
diff --git a/gi/Makefile.am b/gi/Makefile.am
index defe77e..319f2ce 100644
--- a/gi/Makefile.am
+++ b/gi/Makefile.am
@@ -95,7 +95,6 @@ _gi_la_SOURCES = \
        pygi-property.h \
        pygi-signal-closure.c \
        pygi-signal-closure.h \
-       pygobject-external.h \
        pygi-invoke.c \
        pygi-invoke.h \
        pygi-invoke-state-struct.h \