Clean up some discrepancies in the perf recipe configs

scripts/slave/recipe_modules/chromium_tests/api.py

Index: scripts/slave/recipe_modules/chromium_tests/api.py
diff --git a/scripts/slave/recipe_modules/chromium_tests/api.py b/scripts/slave/recipe_modules/chromium_tests/api.py
index 9a4c6bc86fd89dcdc137bf7acbb8c10146296748..a87f7c52d656ff515849ccdca178671d87169950 100644
--- a/scripts/slave/recipe_modules/chromium_tests/api.py
+++ b/scripts/slave/recipe_modules/chromium_tests/api.py
@@ -796,11 +796,6 @@ class ChromiumTestsApi(recipe_api.RecipeApi):
     for name in ('buildername', 'slavename', 'buildnumber', 'mastername'):
       properties[name] = self.m.properties[name]
 
-    # Optional properties
-    for name in ('perf-id', 'results-url'):
-      if bot_config.get(name):
-        properties[name] = bot_config[name]
-
     properties['target_platform'] = self.m.chromium.c.TARGET_PLATFORM
 
     args.extend(['--properties', self.m.json.input(properties)])