diff --git a/pisa-btc/pisa/tools.py b/pisa-btc/pisa/tools.py
deleted file mode 100644
index a01469b..0000000
--- a/pisa-btc/pisa/tools.py
+++ /dev/null
@@ -1,2 +0,0 @@
-def decrypt_tx(m, k, cypher):
-    return m
\ No newline at end of file
diff --git a/pisa-btc/pisa/watcher.py b/pisa-btc/pisa/watcher.py
index cfa46b4..ff77c46 100644
--- a/pisa-btc/pisa/watcher.py
+++ b/pisa-btc/pisa/watcher.py
@@ -1,6 +1,5 @@
 from queue import Queue
 from threading import Thread
-from pisa.tools import decrypt_tx
 from pisa.responder import Responder
 from pisa.zmq_subscriber import ZMQHandler
 from bitcoinrpc.authproxy import AuthServiceProxy, JSONRPCException