Bug 1717651 - Removed instances of 'ensure_subprocess_env' from python/mozperftest r=mhentges

Since Python 2 is no longer used in python/mozperftest, hence 'ensure_subprocess_env' is obsolete.

Differential Revision: https://phabricator.services.mozilla.com/D119898

python/mozperftest/mozperftest/fzf/fzf.py

@@ -9,7 +9,6 @@ import json
 
 from mozterm import Terminal
 from mozboot.util import get_state_dir
-from mozbuild.util import ensure_subprocess_env
 from distutils.spawn import find_executable
 
 
@@ -45,7 +44,7 @@ def run_fzf(cmd, tasks):
         cmd,
         stdout=subprocess.PIPE,
         stdin=subprocess.PIPE,
-        env=ensure_subprocess_env(env),
+        env=env,
         universal_newlines=True,
     )
     out = proc.communicate("\n".join(tasks))[0].splitlines()