Remove useless health component code

Siren's adjustemet code made cahgnes that were soon overwritten without
accomplishing anything. And husk code has some player replication info
obtaining code that is leftover from trying to restore perk resistances
that... didn't actually break from damage type substitution.

sources/Gameplay/KF1Frontend/Health/KF1_HealthComponent.uc

@@ -104,51 +104,13 @@ private function int OnNetDamageHandler(
     Vector              hitLocation,
     out Vector          momentum,
     class<DamageType>   damageType)
-{
-    if (damageType == class'Dummy_DamTypeVomit') {
-        damage = ReapplyNativeBileAdjustments(originalDamage, damage, injured);
-    }
-    if (damageType == class'Dummy_SirenScreamDamage') {
-        damage = ReapplyNativeScreamAdjustments(damage, injured, hitLocation);
-    }
-    return damage;
-}
-
-private function int ReapplyNativeBileAdjustments(
-    int     originalDamage,
-    int     damage,
-    Pawn    injured)
 {
     local KFPlayerReplicationInfo kfPRI;
 
-    if (ZombieBloatBase(injured) != none) {
-        return 0;
-    }
-    if (ZombieFleshpoundBase(injured) != none) {
-        return 0;
-    }
-    if (injured != none && injured.controller != none)
-    {
-        kfPRI = KFPlayerReplicationInfo(
-            injured.controller.playerReplicationInfo);
-    }
-    return damage;
-}
-
-private function int ReapplyNativeScreamAdjustments(
-    int     damage,
-    Pawn    injured,
-    Vector  hitLocation)
-{
-    local KFPawn injuredPawn;
+    if (damageType != class'Dummy_DamTypeVomit')    return damage;
+    if (ZombieBloatBase(injured) != none)           return 0;
+    if (ZombieFleshpoundBase(injured) != none)      return 0;
 
-    injuredPawn = KFPawn(injured);
-    if (injuredPawn != none)
-    {
-        //  TODO: `PlayHit()` is not informed about siren's damage!!!
-        //  TODO: Neither are bloody projectiles!
-        injuredPawn.lastHitDamType = class'SirenScreamDamage';
-    }
     return damage;
 }
 
@@ -160,6 +122,9 @@ private function UpdateBileAchievement(Controller killer, Controller killed)
     local KFSteamStatsAndAchievements           kfSteamStats;
     local array<ConnectionService.Connection>   activeConnections;
 
+    //  `GameInfo` checks that `killed != none`, but between that and this point
+    //  a lot of things can change, so don't count on it and check
+    if (killed == none)                                                 return;
     killedMonster = KFMonster(killed.pawn);
     if (killedMonster == none)                                          return;
     if (killedMonster.lastDamagedByType != class'Dummy_DamTypeVomit')   return;