Rollout edit monitor to 10% users

Simplified the logic in whether to enable edit monitor by passing the
rollout percentage directly instead of reading from a env variable as
now we do not rely on any env var to control the rollout precentage.

Test: atest edit_monitor_utils_test
Bug: 365617369
Change-Id: Ia04d5737dafe2c9715a02f84eb5d75ba6119ceb4
diff --git a/tools/edit_monitor/utils_test.py b/tools/edit_monitor/utils_test.py
index 7d7e4b2..1c30aa1 100644
--- a/tools/edit_monitor/utils_test.py
+++ b/tools/edit_monitor/utils_test.py
@@ -46,60 +46,23 @@
         )
     )
 
-  @mock.patch.dict(
-      os.environ, {ROLLOUT_TEST_FEATURE_FLAG: 'invalid'}, clear=True
-  )
-  def test_feature_disabled_with_invalid_rollout_percentage(self):
-    self.assertFalse(
-        utils.is_feature_enabled(
-            TEST_FEATURE,
-            TEST_USER,
-            ENABLE_TEST_FEATURE_FLAG,
-            ROLLOUT_TEST_FEATURE_FLAG,
-        )
-    )
-
-  @mock.patch.dict(os.environ, {ROLLOUT_TEST_FEATURE_FLAG: '101'}, clear=True)
-  def test_feature_disabled_with_rollout_percentage_too_high(self):
-    self.assertFalse(
-        utils.is_feature_enabled(
-            TEST_FEATURE,
-            TEST_USER,
-            ENABLE_TEST_FEATURE_FLAG,
-            ROLLOUT_TEST_FEATURE_FLAG,
-        )
-    )
-
-  @mock.patch.dict(os.environ, {ROLLOUT_TEST_FEATURE_FLAG: '-1'}, clear=True)
-  def test_feature_disabled_with_rollout_percentage_too_low(self):
-    self.assertFalse(
-        utils.is_feature_enabled(
-            TEST_FEATURE,
-            TEST_USER,
-            ENABLE_TEST_FEATURE_FLAG,
-            ROLLOUT_TEST_FEATURE_FLAG,
-        )
-    )
-
-  @mock.patch.dict(os.environ, {ROLLOUT_TEST_FEATURE_FLAG: '90'}, clear=True)
   def test_feature_enabled_with_rollout_percentage(self):
     self.assertTrue(
         utils.is_feature_enabled(
             TEST_FEATURE,
             TEST_USER,
             ENABLE_TEST_FEATURE_FLAG,
-            ROLLOUT_TEST_FEATURE_FLAG,
+            90,
         )
     )
 
-  @mock.patch.dict(os.environ, {ROLLOUT_TEST_FEATURE_FLAG: '10'}, clear=True)
   def test_feature_disabled_with_rollout_percentage(self):
     self.assertFalse(
         utils.is_feature_enabled(
             TEST_FEATURE,
             TEST_USER,
             ENABLE_TEST_FEATURE_FLAG,
-            ROLLOUT_TEST_FEATURE_FLAG,
+            10,
         )
     )