[LyX/master] Fix xcolor use with *-beamer.layout

[Scott Kostyshak]

commit 97521c4ec4cdb70e08cb4fe8ff4743baede25218
Author: Scott Kostyshak <skost...@lyx.org>
Date:   Thu Mar 10 16:45:32 2016 -0500

    Fix xcolor use with *-beamer.layout
    
    This commit fixes the minimal example of using e.g. purple text in
    article-beamer.
    
    Patch from Jürgen. See discussion here:
    
https://www.mail-archive.com/search?l=mid&q=20160305184215.GA17005%40cotopaxi.hsd1.dc.comcast.net

diff --git a/lib/layouts/article-beamer.layout 
b/lib/layouts/article-beamer.layout
index 1a418f5..94c1f1a 100644
--- a/lib/layouts/article-beamer.layout
+++ b/lib/layouts/article-beamer.layout
@@ -12,7 +12,6 @@ Input beamer.layout
 Provides geometry 0
 Provides hyperref 0
 Provides color    0
-Provides xcolor   0
 
 Preamble
        \usepackage{beamerarticle,pgf}
diff --git a/lib/layouts/scrarticle-beamer.layout 
b/lib/layouts/scrarticle-beamer.layout
index 47de74a..4b85dcb 100644
--- a/lib/layouts/scrarticle-beamer.layout
+++ b/lib/layouts/scrarticle-beamer.layout
@@ -12,7 +12,6 @@ Input beamer.layout
 Provides geometry 0
 Provides hyperref 0
 Provides color    0
-Provides xcolor   0
 
 Preamble
        \usepackage{beamerarticle,pgf}