Don't make other players flash on screen flash (#72)

It makes no visual difference now that player names are affected
by screen flashes.

Fixes PlayerOther flickering in MAP2059 (Sunset Savannah, Yume
2kki) seen during the event triggered by using the Fairy effect.
Regression introduced in 9c20341.

Author: tsdko

src/game_screen.cpp

@@ -119,8 +119,6 @@ void Game_Screen::FlashOnce(int r, int g, int b, int s, int frames) {
 	data.flash_time_left = frames;
 	data.flash_continuous = false;
 	flash_period = 0;
-
-	GMI().ApplyFlash(r, g, b, s, frames);
 }
 
 void Game_Screen::FlashBegin(int r, int g, int b, int s, int frames) {

src/multiplayer/game_multiplayer.cpp

@@ -738,13 +738,6 @@ void Game_Multiplayer::ApplyPlayerBattleAnimUpdates() {
 	}
 }
 
-void Game_Multiplayer::ApplyFlash(int r, int g, int b, int power, int frames) {
-	for (auto& p : players) {
-		p.second.ch->Flash(r, g, b, power, frames);
-		p.second.chat_name->SetFlashFramesLeft(frames);
-	}
-}
-
 void Game_Multiplayer::ApplyRepeatingFlashes() {
 	for (auto& rf : repeating_flashes) {
 		if (players.find(rf.first) != players.end()) {

src/multiplayer/game_multiplayer.h

@@ -42,7 +42,6 @@ class Game_Multiplayer {
 	bool IsBattleAnimSynced(int anim_id);
 	void PlayerBattleAnimShown(int anim_id);
 	void ApplyPlayerBattleAnimUpdates();
-	void ApplyFlash(int r, int g, int b, int power, int frames);
 	void ApplyRepeatingFlashes();
 	void ApplyTone(Tone tone);
 	void ApplyScreenTone();