[LyX/master] Remove "only", which is not really necessary.

[Richard Heck]

commit 539258273d142740a1f49cdfbfa8d44275ba76f7
Author: Richard Heck <rgh...@lyx.org>
Date:   Mon Jun 20 09:49:48 2016 -0400

    Remove "only", which is not really necessary.

diff --git a/src/insets/InsetBranch.cpp b/src/insets/InsetBranch.cpp
index 18db067..1dc1567 100644
--- a/src/insets/InsetBranch.cpp
+++ b/src/insets/InsetBranch.cpp
@@ -106,9 +106,9 @@ docstring const InsetBranch::buttonLabel(BufferView const 
&) const
        if (inmaster && inchild)
                s = _("Branch: ");
        else if (inchild) // && !inmaster
-               s = _("Branch (child only): ");
+               s = _("Branch (child): ");
        else if (inmaster) // && !inchild
-               s = _("Branch (master only): ");
+               s = _("Branch (master): ");
        else // !inmaster && !inchild
                s = _("Branch (undefined): ");
        s += params_.branch;