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/property_service.h b/init/property_service.h
index 994da63..585cd0f 100644
--- a/init/property_service.h
+++ b/init/property_service.h
@@ -20,6 +20,7 @@
 #include <stddef.h>
 #include <sys/socket.h>
 #include <sys/system_properties.h>
+
 #include <string>
 
 struct property_audit_data {