清理多余代码，优化

单军华

2018-04-28 1d39caf7235522ae121db7a188ba41a706217407

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<?xml version="1.0" encoding="UTF-8"?>
<Workspace
   version = "1.0">
   <FileRef
      location = "self:/Users/WindShan/Documents/ios/oc/pregnancy_guard_ios/pregnancy_guard/pregnancy_guard.xcodeproj">
   </FileRef>
</Workspace>