Remove old-format PersistedLogs support

components/metrics/metrics_log_manager.cc

Index: components/metrics/metrics_log_manager.cc
diff --git a/components/metrics/metrics_log_manager.cc b/components/metrics/metrics_log_manager.cc
index 387b20019e818745bb709eb6e1b72e5d8a95c39a..cc35bbd5346060135ae67927289eb389d1f64872 100644
--- a/components/metrics/metrics_log_manager.cc
+++ b/components/metrics/metrics_log_manager.cc
@@ -45,7 +45,6 @@ MetricsLogManager::MetricsLogManager(PrefService* local_state,
                              new PersistedLogsMetricsImpl()),
                          local_state,
                          prefs::kMetricsInitialLogs,
-                         prefs::kDeprecatedMetricsInitialLogs,
                          kInitialLogsPersistLimit,
                          kStorageByteLimitPerLogType,
                          0),
@@ -53,7 +52,6 @@ MetricsLogManager::MetricsLogManager(PrefService* local_state,
                              new PersistedLogsMetricsImpl()),
                          local_state,
                          prefs::kMetricsOngoingLogs,
-                         prefs::kDeprecatedMetricsOngoingLogs,
                          kOngoingLogsPersistLimit,
                          kStorageByteLimitPerLogType,
                          max_ongoing_log_size) {}