pw_cli: Remove old env vars

Bug: 274
Change-Id: Ib4b9e7d0e24291a5f4bcc123ddf2ad533faa6a32
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/61241
Pigweed-Auto-Submit: Rob Mohr <mohrr@google.com>
Reviewed-by: Keir Mierle <keir@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/pw_cli/py/pw_cli/env.py b/pw_cli/py/pw_cli/env.py
index a9e9025..b26b42d 100644
--- a/pw_cli/py/pw_cli/env.py
+++ b/pw_cli/py/pw_cli/env.py
@@ -51,17 +51,6 @@
                    type=envparse.strict_bool,
                    default=False)
 
-    # TODO(pwbug/274) Remove after some transition time. These are no longer
-    # used but may be set by users or downstream projects, or just in currently
-    # active shells.
-    parser.add_var('PW_CIPD_PACKAGE_FILES')
-    parser.add_var('PW_VIRTUALENV_REQUIREMENTS')
-    parser.add_var('PW_VIRTUALENV_REQUIREMENTS_APPEND_DEFAULT')
-    parser.add_var('PW_VIRTUALENV_SETUP_PY_ROOTS')
-    parser.add_var('PW_CARGO_PACKAGE_FILES')
-    parser.add_var('PW_CARGO_SETUP', type=envparse.strict_bool, default=False)
-    parser.add_var('PW_VIRTUALENV_REQUIREMENTS_APPEND_DEFAULT')
-
     parser.add_var('PW_BANNER_FUNC')
     parser.add_var('PW_BRANDING_BANNER')
     parser.add_var('PW_BRANDING_BANNER_COLOR', default='magenta')