strat: split out common functionality for future meso use

stratosphere/sm/source/impl/sm_service_manager.cpp

@@ -13,13 +13,6 @@
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
-
-#include <switch.h>
-#include <stratosphere.hpp>
-#include <stratosphere/cfg.hpp>
-#include <stratosphere/ncm.hpp>
-#include <stratosphere/sm.hpp>
-
 #include "sm_service_manager.hpp"
 
 namespace ams::sm::impl {