[librsvg] doc/Makefile.am: there are no generated C sources in builddir anymore

[Federico Mena Quintero <federico src gnome org>]

commit 2a442b72cd8bd1c17920f112fcf84b8435a24afa
Author: Federico Mena Quintero <federico gnome org>
Date:   Fri Feb 15 16:45:33 2019 -0600

    doc/Makefile.am: there are no generated C sources in builddir anymore

 doc/Makefile.am | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 86dc3a40..7ef876f8 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -58,8 +58,7 @@ HFILE_GLOB = \
        $(top_builddir)/librsvg/*.h
 
 CFILE_GLOB = \
-       $(top_srcdir)/librsvg/*.c \
-       $(top_builddir)/librsvg/*.c
+       $(top_srcdir)/librsvg/*.c
 
 # Extra header to include when scanning, which are not under DOC_SOURCE_DIR
 # e.g. EXTRA_HFILES=$(top_srcdir}/contrib/extra.h