Delete unused extern (#1178)

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Guanghua Guo authored and Gav Wood committed 2018-11-30 07:27:30 +01:00
1 parent c27c613445
commit 309f627d5c
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@@ -26,10 +26,6 @@ extern crate srml_support;
#[macro_use]
extern crate sr_primitives as runtime_primitives;
#[cfg(feature = "std")]
#[macro_use]
extern crate serde_derive;
extern crate substrate_primitives;
#[macro_use]