wificond: Don't reset system state on bootup

wificond no longer (was planned) manages the entire system state. The
framework is responsible for managing all the native daemons and the
interface state. So, don't reset system state (i.e kill supplicant,
hostapd and mark interfaces down) when wificond boots up.

Note: This change eliminates the second death notification that framework
has been receiving on killing wificond (previously: one for wificond, one
for supplicant; now: just one for wificond).

Bug: 75993335
Test: ./system/connectivity/wificond/runtests.sh
Test: Ran WifiManager & WifiSoftAp ACTS tests locally
Test: 'killall wificond' only produces 1 death notification.
Change-Id: I5effcbb6898f6744632cc7de65fccb4721b9add6
diff --git a/main.cpp b/main.cpp
index 488447c..9928f63 100644
--- a/main.cpp
+++ b/main.cpp
@@ -148,7 +148,6 @@
       unique_ptr<HostapdManager>(new HostapdManager()),
       &netlink_utils,
       &scan_utils));
-  server->CleanUpSystemState();
   RegisterServiceOrCrash(server.get());
 
   event_dispatcher->Poll();
diff --git a/server.cpp b/server.cpp
index 4e4796c..59745f1 100644
--- a/server.cpp
+++ b/server.cpp
@@ -256,12 +256,6 @@
   }
 }
 
-void Server::CleanUpSystemState() {
-  supplicant_manager_->StopSupplicant();
-  hostapd_manager_->StopHostapd();
-  MarkDownAllInterfaces();
-}
-
 Status Server::getAvailable2gChannels(
     std::unique_ptr<vector<int32_t>>* out_frequencies) {
   BandInfo band_info;
diff --git a/server.h b/server.h
index 70505c0..fe54242 100644
--- a/server.h
+++ b/server.h
@@ -95,11 +95,6 @@
       std::vector<android::sp<android::IBinder>>* out_ap_ifs) override;
   status_t dump(int fd, const Vector<String16>& args) override;
 
-  // Call this once on startup.  It ignores all the invariants held
-  // in wificond and tries to restore ourselves to a blank state by
-  // killing userspace daemons and cleaning up the interface state.
-  void CleanUpSystemState();
-
  private:
   // Request interface information from kernel and setup local interface object.
   // This assumes that interface should be in STATION mode. Even if we setup