Remove quotes from i2cp.tcp.port setting

For some reason it really doesn't like that and
 subsequently can't connect to the host

#32 - Docker image

core/src/main/resources/defaults/i2p.properties

@@ -5,4 +5,4 @@ inbound.quantity="4"
 outbound.length="3"
 outbound.quantity="4"
 i2cp.tcp.host="127.0.0.1"
-i2cp.tcp.port="7654"
+i2cp.tcp.port=7654