Remove semicolons and a couple unused variables. (#212)

lib/coins.py

@@ -815,7 +815,7 @@ class Blackcoin(Coin):
         if version > 6:
             return super().header_hash(header)
         else:
-            return cls.HEADER_HASH(header);
+            return cls.HEADER_HASH(header)
 
 
 class Peercoin(Coin):

query.py

@@ -56,7 +56,6 @@ def main():
         print('Address: ', addr)
         hashX = coin.address_to_hashX(addr)
 
-        n = None
         for n, (tx_hash, height) in enumerate(bp.get_history(hashX, limit)):
             print('History #{:d}: hash: {} height: {:d}'
                   .format(n + 1, hash_to_str(tx_hash), height))

server/db.py

@@ -571,7 +571,7 @@ class DB(util.LoggedClass):
         if nrows > 4:
             self.log_info('hashX {} is large: {:,d} entries across {:,d} rows'
                           .format(hash_to_str(hashX), len(full_hist) // 4,
-                                  nrows));
+                                  nrows))
 
         # Find what history needs to be written, and what keys need to
         # be deleted.  Start by assuming all keys are to be deleted,
@@ -660,7 +660,6 @@ class DB(util.LoggedClass):
         limit = 50 * 1000 * 1000
 
         while self.comp_cursor != -1:
-            locked = self.semaphore.locked
             if self.semaphore.locked:
                 self.log_info('compact_history: waiting on semaphore...')
             with await self.semaphore: