[Commands] Cleanup #showbuffs Command (#3439)

* [Commands] Cleanup #showbuffs Command

# Notes
- Cleaned up messages and logic.
- Removed unnecessary itembonuses/spellbonuses stuff.
- Removed `Mob::ShowBuffList` as it's just a copy of this method.

* Update mob.cpp

* Further cleanup.

* Update mob.cpp

* Update mob.cpp

zone/gm_commands/showbuffs.cpp

@@ -2,11 +2,11 @@
 
 void command_showbuffs(Client *c, const Seperator *sep)
 {
-	if (c->GetTarget() == 0) {
-		c->CastToMob()->ShowBuffs(c);
-	}
-	else {
-		c->GetTarget()->CastToMob()->ShowBuffs(c);
+	Mob* t = c;
+	if (c->GetTarget()) {
+		t = c->GetTarget();
 	}
+
+	t->ShowBuffs(c);
 }
 

zone/gm_commands/shownumhits.cpp

@@ -1,8 +0,0 @@
-#include "../client.h"
-
-void command_shownumhits(Client *c, const Seperator *sep)
-{
-	c->ShowNumHits();
-	return;
-}
-