chore(PCH): remove "ScriptPCH.h" from cpp scripts (#1423)

remove "ScriptPCH.h" from cpp scripts as it is intended to be used as precompiled header for the build process only

src/server/scripts/EasternKingdoms/MagistersTerrace/boss_felblood_kaelthas.cpp

@@ -3,7 +3,6 @@
 */
 
 #include "ScriptMgr.h"
-#include "ScriptPCH.h"
 #include "ScriptedCreature.h"
 #include "magisters_terrace.h"
 #include "WorldPacket.h"

src/server/scripts/EasternKingdoms/MagistersTerrace/instance_magisters_terrace.cpp

@@ -3,7 +3,6 @@
 */
 
 #include "ScriptMgr.h"
-#include "ScriptPCH.h"
 #include "InstanceScript.h"
 #include "magisters_terrace.h"
 

src/server/scripts/EasternKingdoms/MagistersTerrace/magisters_terrace.h

@@ -5,7 +5,9 @@
 #ifndef DEF_MAGISTERS_TERRACE_H
 #define DEF_MAGISTERS_TERRACE_H
 
-#include "ScriptPCH.h"
+#include "Player.h"
+#include "CreatureAI.h"
+#include "SpellScript.h"
 
 enum MTData
 {