http://git-wip-us.apache.org/repos/asf/incubator-weex/blob/b70b5b87/pre-build/weex-polyfill.js
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diff --git a/pre-build/weex-polyfill.js b/pre-build/weex-polyfill.js
deleted file mode 100644
index 21a3611..0000000
--- a/pre-build/weex-polyfill.js
+++ /dev/null
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