[gnome-photos] build: Remove unused -ldl

[Debarshi Ray <debarshir src gnome org>]

commit ff292f980863bef7ca9c890184f5fabc4584a240
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Thu Jul 14 11:52:08 2016 +0800

    build: Remove unused -ldl
    
    No dl* function calls were added, so -ldl is not needed.
    
    Fall out from af6b5e8244a704d6bd656505b520c28e8cbac649
    
    https://bugzilla.gnome.org/show_bug.cgi?id=768792

 src/Makefile.am |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 4f541cc..8f5487b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -327,7 +327,6 @@ gnome_photos_LDADD = \
        $(TRACKER_LIBS) \
        $(LIBM) \
        $(LIBRT) \
-       -ldl \
        $(top_builddir)/libgd/libgd.la \
        $(NULL)