Remove PYTHONHOME twiddling which is no longer necessary.

nixpkgs Python tools changed to no longer set PYTHONHOME for us
automatically.

nixos/modules/tests/run-client.py

@@ -14,10 +14,6 @@ from configparser import ConfigParser
 def main():
     (introducerFURL, issuerURL) = argv[1:]
 
-    # PYTHONHOME set for Python 3 for this script breaks Python 2 used by
-    # Tahoe. :/ This is kind of a NixOS Python packaging bug.
-    del environ["PYTHONHOME"]
-
     run(["tahoe", "--version"])
     run([
         "tahoe", "create-client",

nixos/modules/tests/run-introducer.py

@@ -17,10 +17,6 @@ log = print
 def main():
     pemFile, introducerPort, introducerFURL = argv[1:]
 
-    # PYTHONHOME set for Python 3 for this script breaks Python 2 used by
-    # Tahoe. :/ This is kind of a NixOS Python packaging bug.
-    del environ["PYTHONHOME"]
-
     run(["tahoe", "--version"])
     run([
         "tahoe", "create-introducer",