fix(Server): remove double blank lines at the end of several files (#19735)

src/server/scripts/Northrend/Ulduar/HallsOfLightning/boss_loken.cpp

@@ -290,4 +290,3 @@ void AddSC_boss_loken()
     new boss_loken();
     new spell_loken_pulsing_shockwave();
 }
-

src/server/scripts/Northrend/Ulduar/HallsOfLightning/instance_halls_of_lightning.cpp

@@ -218,4 +218,3 @@ void AddSC_instance_halls_of_lightning()
 {
     new instance_halls_of_lightning();
 }
-

src/server/scripts/Northrend/Ulduar/HallsOfStone/boss_krystallus.cpp

@@ -251,4 +251,3 @@ void AddSC_boss_krystallus()
     new spell_krystallus_shatter();
     new spell_krystallus_shatter_effect();
 }
-

src/server/scripts/Northrend/Ulduar/HallsOfStone/brann_bronzebeard.cpp

@@ -899,4 +899,3 @@ void AddSC_brann_bronzebeard()
     new iron_golem_custodian();
     new spell_hos_dark_matter();
 }
-

src/server/scripts/Northrend/Ulduar/HallsOfStone/instance_halls_of_stone.cpp

@@ -268,4 +268,3 @@ void AddSC_instance_halls_of_stone()
 {
     new instance_halls_of_stone();
 }
-

src/server/scripts/Northrend/Ulduar/Ulduar/boss_freya.cpp

@@ -1313,4 +1313,3 @@ void AddSC_boss_freya()
     new achievement_freya_knock_on_wood("achievement_freya_knock_knock_on_wood", 2);
     new achievement_freya_knock_on_wood("achievement_freya_knock_knock_knock_on_wood", 3);
 }
-

src/server/scripts/Northrend/Ulduar/Ulduar/boss_razorscale.cpp

@@ -1181,4 +1181,3 @@ void AddSC_boss_razorscale()
     new achievement_quick_shave();
     new achievement_iron_dwarf_medium_rare();
 }
-

src/server/scripts/Northrend/Ulduar/Ulduar/instance_ulduar.cpp

@@ -1348,4 +1348,3 @@ void AddSC_instance_ulduar()
 {
     new instance_ulduar();
 }
-