Remove extra CBlockIndex declaration

rrybarczyk · rrybarczyk · commit 9824a0d6e91f · 2019-06-25T15:02:34.000-04:00
diff --git a/src/validationinterface.h b/src/validationinterface.h
@@ -16,7 +16,6 @@ extern CCriticalSection cs_main;
 class CBlock;
 class CBlockIndex;
 struct CBlockLocator;
-class CBlockIndex;
 class CConnman;
 class CValidationInterface;
 class CValidationState;
