docs: Remove the last couple mentions of Paver from the codebase

Part of: https://github.com/openedx/edx-platform/issues/34467

lms/envs/minimal.yml

@@ -2,7 +2,8 @@
 #
 # This is the minimal settings you need to set to be able to get django to
 # load when using the production.py settings files. It's useful to point
-# LMS_CFG and CMS_CFG to this file to be able to run various paver commands
+# LMS_CFG and CMS_CFG to this file to be able to run various npm commands
+# and make targets (e.g.: building assets, pulling translations, etc.)
 # without needing a full docker setup.
 #
 # Follow up work will likely be done as a part of

xmodule/tests/__init__.py

@@ -1,10 +1,5 @@
 """
 unittests for xmodule
-
-Run like this:
-
-    paver test_lib -l ./xmodule
-
 """