Removed hardcoded global->limit

Looks like test code.

Change-Id: I5deae2bf14ea6fdcbb9b9d993966c9abef95eb2e

vpxenc.c

diff --git a/vpxenc.c b/vpxenc.c
index f4adb19..a60b84d 100644
--- a/vpxenc.c
+++ b/vpxenc.c
@@ -1759,7 +1759,6 @@
     else
       argj++;
   }
-global->limit = 50;
 
   /* Validate global config */