Bug 1436598 - Removed unused Django media configuration

Since we don't allow user uploads.

.gitignore

@@ -22,7 +22,6 @@ npm-error.log
 # Treeherder-specific
 dist/
 docs/_build/
-treeherder/media/
 treeherder/static/
 ui/js/config/local.conf.js
 # frontend test coverage

treeherder/config/settings.py

@@ -40,9 +40,6 @@ WHITENOISE_ROOT = path("..", "dist")
 STATIC_ROOT = path("static")
 STATIC_URL = "/static/"
 
-MEDIA_ROOT = path("media")
-MEDIA_URL = "/media/"
-
 # Default minimum regression threshold for perfherder is 2% (otherwise
 # e.g. the build size tests will alert on every commit)
 PERFHERDER_REGRESSION_THRESHOLD = 2