init: more header cleanup

Remove includes of "log.h" that really want <android-base/logging.h>
Fix header include order
Remove headers included in .cpp files that their associated .h already includes
Remove some unused headers

Test: boot bullhead
Change-Id: I2b415adfe86a5c8bbe4fb1ebc53c7b0ee2253824
diff --git a/init/reboot.cpp b/init/reboot.cpp
index 62e5c85..53bdeb1 100644
--- a/init/reboot.cpp
+++ b/init/reboot.cpp
@@ -13,6 +13,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
+#include "reboot.h"
+
 #include <dirent.h>
 #include <fcntl.h>
 #include <mntent.h>
@@ -27,11 +30,11 @@
 
 #include <memory>
 #include <set>
-#include <string>
 #include <thread>
 #include <vector>
 
 #include <android-base/file.h>
+#include <android-base/logging.h>
 #include <android-base/macros.h>
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
@@ -41,11 +44,8 @@
 #include <fs_mgr.h>
 #include <logwrap/logwrap.h>
 
-#include "log.h"
 #include "property_service.h"
-#include "reboot.h"
 #include "service.h"
-#include "util.h"
 
 using android::base::StringPrintf;