Remove BR2_DEPRECATED_SINCE_2013_11

The symbol is unused so remove it.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

Config.in

@@ -298,10 +298,6 @@ config BR2_DEPRECATED
 
 if BR2_DEPRECATED
 
-config BR2_DEPRECATED_SINCE_2013_11
-	bool
-	default y
-
 config BR2_DEPRECATED_SINCE_2014_02
 	bool
 	default y