tests: Remove compatibility code not needed now when we're on Python 3

share/rpcauth/rpcauth.py

@@ -3,7 +3,6 @@
 # Distributed under the MIT software license, see the accompanying 
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-import hashlib
 import sys
 import os
 from random import SystemRandom
@@ -25,15 +24,9 @@ hexseq = list(map(hex, salt_sequence))
 salt = "".join([x[2:] for x in hexseq])
 
 #Create 32 byte b64 password
-password = base64.urlsafe_b64encode(os.urandom(32))
-
-digestmod = hashlib.sha256
-
-if sys.version_info.major >= 3:
-    password = password.decode('utf-8')
-    digestmod = 'SHA256'
+password = base64.urlsafe_b64encode(os.urandom(32)).decode("utf-8")
  
-m = hmac.new(bytearray(salt, 'utf-8'), bytearray(password, 'utf-8'), digestmod)
+m = hmac.new(bytearray(salt, 'utf-8'), bytearray(password, 'utf-8'), "SHA256")
 result = m.hexdigest()
 
 print("String to be appended to bitcoin.conf:")