wallet: Avoid use of Chain::Lock in CWallet::GetKeyBirthTimes

This is a step toward removing the Chain::Lock class and reducing cs_main
locking.

This change only affects behavior in the case where wallet last block processed
falls behind the chain tip, where it will treat the last block processed as the
current tip.

1 files changed, 0 insertions, 7 deletions

diff --git a/src/interfaces/chain.cpp b/src/interfaces/chain.cpp
index 2b2d3a4b8..c8311b298 100644
--- a/src/interfaces/chain.cpp
+++ b/src/interfaces/chain.cpp
@@ -80,13 +80,6 @@ class LockImpl : public Chain::Lock, public UniqueLock<RecursiveMutex>
         assert(block != nullptr);
         return block->GetBlockHash();
     }
-    int64_t getBlockTime(int height) override
-    {
-        LockAssertion lock(::cs_main);
-        CBlockIndex* block = ::ChainActive()[height];
-        assert(block != nullptr);
-        return block->GetBlockTime();
-    }
     bool haveBlockOnDisk(int height) override
     {
         LockAssertion lock(::cs_main);