Remove unused file

projects/mtg/src/MTGSpellStack.cpp

@@ -1,22 +0,0 @@
-#include "MTGSpellStack.h"
-
-MTGSpellStack::MTGSpellStack()
-{
-    cursor = -1;
-}
-
-void MTGSpellStack::addSpell(Ability * ability)
-{
-    cursor++;
-    spellStack[cursor] ability;
-}
-
-int MTGSpellStack::resolve()
-{
-    if (cursor < 0)
-        return 0;
-    int result = cursor;
-    cursor--;
-    (spellStack[cursor + 1])->resolve();
-    return (result + 1);
-}