remove duplicate licence prolog
remove duplicate licence prolog

Reviewed By: yfeldblum

Differential Revision: D3174112

fb-gh-sync-id: 00a01f64fb43d2333818097bb2212e26e4dd5775
fbshipit-source-id: 00a01f64fb43d2333818097bb2212e26e4dd5775

charsyam/folly,mqeizi/folly,Orvid/folly,mqeizi/folly,brunomorishita/folly,floxard/folly,rklabs/folly,facebook/folly,brunomorishita/folly,Orvid/folly,floxard/folly,charsyam/folly,floxard/folly,brunomorishita/folly,rklabs/folly,rklabs/folly,facebook/folly,Orvid/folly,charsyam/folly,Orvid/folly,floxard/folly,facebook/folly,mqeizi/folly,brunomorishita/folly,Orvid/folly,rklabs/folly,floxard/folly,mqeizi/folly,rklabs/folly,mqeizi/folly,brunomorishita/folly,facebook/folly,charsyam/folly,facebook/folly