Format code according to conventions (#16322)

quantum/main.c

@@ -45,7 +45,7 @@ void protocol_task(void) {
 
 #ifdef DEFERRED_EXEC_ENABLE
 void deferred_exec_task(void);
-#endif  // DEFERRED_EXEC_ENABLE
+#endif // DEFERRED_EXEC_ENABLE
 
 /** \brief Main
  *
@@ -66,7 +66,7 @@ int main(void) {
 #ifdef DEFERRED_EXEC_ENABLE
         // Run deferred executions
         deferred_exec_task();
-#endif  // DEFERRED_EXEC_ENABLE
+#endif // DEFERRED_EXEC_ENABLE
 
         housekeeping_task();
     }