cogl: Remove cogl-defines.h.in from the driver make files

Commit 7fae8ac051 changed cogl-defines.h.in so there is only a
single copy in clutter/cogl/ instead of one for each driver. However
the old files were still mentioned in the EXTRA_DIST of the
Makefile.am so make distcheck was failing.

cogl/Makefile.am

@@ -49,6 +49,8 @@ AM_CFLAGS = $(CLUTTER_CFLAGS) $(MAINTAINER_CFLAGS)
 BUILT_SOURCES += cogl-defines.h
 DISTCLEANFILES += cogl-defines.h
 
+EXTRA_DIST += cogl-defines.h.in
+
 # public headers
 cogl_public_h = \
 	$(srcdir)/cogl-object.h 		\

cogl/driver/gl/Makefile.am

@@ -32,5 +32,5 @@ libclutter_cogl_driver_la_SOURCES = \
 	cogl-feature-functions.h \
 	$(NULL)
 
-EXTRA_DIST = cogl-defines.h.in
+
 

cogl/driver/gles/Makefile.am

@@ -42,7 +42,6 @@ libclutter_cogl_driver_la_SOURCES += \
 endif
 
 EXTRA_DIST = \
-	cogl-defines.h.in \
 	stringify.sh \
 	cogl-fixed-vertex-shader.glsl \
 	cogl-fixed-fragment-shader.glsl