ENH: remove stray comma that made the msg a tuple

mattip · mattip · commit 2f9f10a5ab1b · 2016-10-01T19:21:26.000+03:00
diff --git a/numpy/linalg/linalg.py b/numpy/linalg/linalg.py
@@ -741,7 +741,7 @@ def qr(a, mode='reduced'):
             mode = 'reduced'
         elif mode in ('e', 'economic'):
             # 2013-04-01, 1.8
-            msg = "The 'economic' option is deprecated.",
+            msg = "The 'economic' option is deprecated."
             warnings.warn(msg, DeprecationWarning, stacklevel=2)
             mode = 'economic'
         else:
