Remove duplicate mastercard pattern

ahumphreys87 · ahumphreys87 · commit 5b749b730408 · 2016-10-12T15:33:58.000+01:00
diff --git a/src/index.coffee b/src/index.coffee
@@ -61,7 +61,6 @@ cards = [
   }
   {
       type: 'mastercard'
-      pattern: /^5[1-5]/
       pattern: /^(5[1-5]|677189)|^(222[1-9]|2[3-6]\d{2}|27[0-1]\d|2720)/
       format: defaultFormat
       length: [16]
