log: remove kernel_LOG_LOCK

It is no longer exposed by bitcoinkernel

Author: stickies-v

src/pbk/log.py

@@ -12,7 +12,6 @@ class LogCategory(IntEnum):
     BLOCKSTORAGE = k.kernel_LOG_BLOCKSTORAGE
     COINDB = k.kernel_LOG_COINDB
     LEVELDB = k.kernel_LOG_LEVELDB
-    LOCK = k.kernel_LOG_LOCK
     MEMPOOL = k.kernel_LOG_MEMPOOL
     PRUNE = k.kernel_LOG_PRUNE
     RAND = k.kernel_LOG_RAND