[gnome-photos] build: Don't install COPYING

[Debarshi Ray <debarshir src gnome org>]

commit ef15cadbbf14c6baf99871828806ffa500c7b2e0
Author: Debarshi Ray <debarshir gnome org>
Date:   Fri Oct 19 17:57:50 2018 +0200

    build: Don't install COPYING
    
    $datadir/doc or $docdir is not necessarily the right location to place
    the COPYING file. Some distributors might want to install it somewhere
    else. eg., Fedora RPMs [1] mark the license text with %license which
    puts it under $datadir/licenses. Currently, such a distributor has to
    go out of its way to not have two copies of the files.
    
    As a data point, GLib doesn't install its COPYING file either.
    
    Users can still see the license from the application's about dialog.
    
    [1] https://fedoraproject.org/wiki/Packaging:LicensingGuidelines

 Makefile.am | 2 +-
 meson.build | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 04087a03..3f79dbd5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -6,12 +6,12 @@ photosdocdir = $(docdir)
 photosdoc_DATA = \
        ARTISTS \
        AUTHORS \
-       COPYING \
        NEWS \
        README \
        $(NULL)
 
 EXTRA_DIST = \
+       COPYING \
        $(photosdoc_DATA) \
        $(NULL)
 
diff --git a/meson.build b/meson.build
index a0fdc369..ca10374a 100644
--- a/meson.build
+++ b/meson.build
@@ -185,7 +185,6 @@ artists = files('ARTISTS')
 authors = files('AUTHORS')
 
 doc_data = artists + authors + files(
-  'COPYING',
   'NEWS',
   'README',
 )