[Maintenance] [th01] Bosses: Classify the end-of-boss scene load as ZUN bloat

Part of P0229, funded by Ember2528.

th01/main/boss/b10j.cpp

@@ -1345,6 +1345,10 @@ void mima_main(void)
 			Missiles.reset();
 			shootout_lasers_unput_and_reset_broken(i, 5); // 5? Doubly broken...
 			boss_defeat_animate();
+
+			// ZUN bloat: Already done at the start of REIIDEN.EXE's main().
+			// The REIIDEN.EXE process restarts after the end of a scene
+			// anyway, making this load doubly pointless.
 			scene_init_and_load(4);
 		}
 	}

th01/main/boss/b10m.cpp

@@ -1211,6 +1211,12 @@ inline void conditionally_reset_missiles(bool cond) {
 		/* 5? Triply broken, since this fight doesn't even use lasers... */ \
 		shootout_lasers_unput_and_reset_broken(tmp_i, 5); \
 		boss_defeat_animate(); \
+		\
+		/** \
+		 * ZUN bloat: Already done at the start of REIIDEN.EXE's main(). \
+		 * The REIIDEN.EXE process restarts after the end of a scene \
+		 * anyway, making this load doubly pointless. \
+		 */ \
 		scene_init_and_load(3); \
 	} \
 }

th01/main/boss/b15j.cpp

@@ -1158,6 +1158,10 @@ entrance_rings_still_active:
 			Pellets.unput_and_reset();
 			shootout_lasers_unput_and_reset_broken(i, 4); // 4? Doubly broken...
 			boss_defeat_animate();
+
+			// ZUN bloat: Already done at the start of REIIDEN.EXE's main().
+			// The REIIDEN.EXE process restarts after the end of a scene
+			// anyway, making this load doubly pointless.
 			scene_init_and_load(6);
 		}
 	}

th01/main/boss/b15m.cpp

@@ -2140,6 +2140,10 @@ void elis_main(void)
 			Missiles.reset();
 			shootout_lasers_unput_and_reset_broken(i, SHOOTOUT_LASER_COUNT);
 			boss_defeat_animate();
+
+			// ZUN bloat: Already done at the start of REIIDEN.EXE's main().
+			// The REIIDEN.EXE process restarts after the end of a scene
+			// anyway, making this load doubly pointless.
 			scene_init_and_load(5);
 		}
 	}

th01/main/boss/defeat.cpp

@@ -199,11 +199,15 @@ void singyoku_defeat_animate_and_select_route(void)
 		frame_delay(5);
 	}
 
+	// ZUN bloat: Already done at the start of REIIDEN.EXE's main(). The
+	// REIIDEN:EXE process restarts after the end of a scene anyway, making
+	// this load doubly pointless.
 	if(route_sel.v == ROUTE_MAKAI) {
 		scene_init_and_load(1);
 	} else {
 		scene_init_and_load(2);
 	}
+
 	route = route_sel.v;
 	stage_cleared = true;
 	player_is_hit = true;