tests: fix confusing comment

Author: SomberNight

tests/test_blocks.py

@@ -66,8 +66,7 @@ def _does_coin_require_testcase(coin: Coin) -> bool:
 BLOCKS_DIR = os.path.join(
     os.path.dirname(os.path.realpath(__file__)), 'blocks')
 
-# Find out which db engines to test
-# Those that are not installed will be skipped
+# Find testcases
 blocks = []
 
 for name in os.listdir(BLOCKS_DIR):

tests/test_transactions.py

@@ -18,8 +18,7 @@
 TRANSACTION_DIR = os.path.join(
     os.path.dirname(os.path.realpath(__file__)), 'transactions')
 
-# Find out which db engines to test
-# Those that are not installed will be skipped
+# Find testcases
 transactions_bitcoin = []
 transactions_alts = []