[gnome-builder] library-template: Remove AUTHORS from .PHONY target dependencies

[Philip Withnall <pwithnall src gnome org>]

commit 6e777d5a600387b059ac71905bcd5e51940cf925
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Sun Jan 31 11:20:02 2016 +0100

    library-template: Remove AUTHORS from .PHONY target dependencies
    
    .PHONY targets are targets which don’t really exist — AUTHORS is the
    name of a generated file, so it does exist.
    
    https://www.gnu.org/software/make/manual/html_node/Phony-Targets.html
    
    https://bugzilla.gnome.org/show_bug.cgi?id=761356

 .../library_template/shared-library/Makefile.am    |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/plugins/library-template/library_template/shared-library/Makefile.am 
b/plugins/library-template/library_template/shared-library/Makefile.am
index 05ab2b6..3bc1262 100644
--- a/plugins/library-template/library_template/shared-library/Makefile.am
+++ b/plugins/library-template/library_template/shared-library/Makefile.am
@@ -21,8 +21,6 @@ AUTHORS:
                     echo Failed to generate $@ >&2 ); \
        fi
 
-.PHONY: AUTHORS
-
 # Generate the ChangeLog.
 @GENERATE_CHANGELOG_RULES@
 dist-hook: dist-ChangeLog