[LyX/master] Remove unneeded warning.

[Juergen Spitzmueller]

commit b930f2a18ea698b3122168194e30415faef16186
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Mon Dec 28 12:34:11 2015 +0100

    Remove unneeded warning.

diff --git a/lib/lyx2lyx/lyx_2_0.py b/lib/lyx2lyx/lyx_2_0.py
index 64a908c..1f10154 100644
--- a/lib/lyx2lyx/lyx_2_0.py
+++ b/lib/lyx2lyx/lyx_2_0.py
@@ -557,7 +557,6 @@ def revert_nomencl_cwidth(document):
       j = find_end_of_inset(document.body, i)
       l = find_token(document.body, "width", i, j)
       if l == -1:
-        document.warning("Can't find width option for nomencl_print!")
         i = j
         continue
       width = get_quoted_value(document.body, "width", i, j)