diff --git a/src/KingSystem/Utils/BitSet.h b/src/KingSystem/Utils/BitSet.h
deleted file mode 100644
index ad48fc3d..00000000
--- a/src/KingSystem/Utils/BitSet.h
+++ /dev/null
@@ -1,115 +0,0 @@
-#pragma once
-
-#include <array>
-#include <basis/seadTypes.h>
-#include <math/seadMathCalcCommon.h>
-#include <prim/seadBitFlag.h>
-
-namespace ksys::util {
-
-template <int N>
-class BitSet {
-public:
-    using Word = u32;
-
-    void makeAllZero() { mStorage.fill(0); }
-    void makeAllOne() { mStorage.fill(~Word(0)); }
-
-    Word& getWord(int bit);
-    const Word& getWord(int bit) const;
-
-    bool isZero() const;
-
-    void setBit(int bit);
-    void resetBit(int bit);
-    void changeBit(int bit, bool on);
-    void toggleBit(int bit);
-    bool isOnBit(int bit) const;
-    bool isOffBit(int bit) const;
-
-    /// Popcount.
-    int countOnBit() const;
-    int countRightOnBit(int bit) const;
-
-    static Word makeMask(int bit) { return 1u << (bit % BitsPerWord); }
-
-protected:
-    static constexpr u32 BitsPerWord = 8 * sizeof(Word);
-
-    static_assert(N % BitsPerWord == 0, "N must be a multiple of the number of bits per word");
-    std::array<Word, N / BitsPerWord> mStorage{};
-};
-
-template <int N>
-inline typename BitSet<N>::Word& BitSet<N>::getWord(int bit) {
-    return mStorage[bit / BitsPerWord];
-}
-
-template <int N>
-inline const typename BitSet<N>::Word& BitSet<N>::getWord(int bit) const {
-    return mStorage[bit / BitsPerWord];
-}
-
-template <int N>
-inline void BitSet<N>::setBit(int bit) {
-    getWord(bit) |= makeMask(bit);
-}
-
-template <int N>
-inline void BitSet<N>::resetBit(int bit) {
-    getWord(bit) &= ~makeMask(bit);
-}
-
-template <int N>
-inline void BitSet<N>::changeBit(int bit, bool on) {
-    if (on)
-        setBit(bit);
-    else
-        resetBit(bit);
-}
-
-template <int N>
-inline void BitSet<N>::toggleBit(int bit) {
-    getWord(bit) ^= makeMask(bit);
-}
-
-template <int N>
-inline bool BitSet<N>::isOnBit(int bit) const {
-    return (getWord(bit) & makeMask(bit)) != 0;
-}
-
-template <int N>
-inline bool BitSet<N>::isOffBit(int bit) const {
-    return !isOnBit(bit);
-}
-
-template <int N>
-inline bool BitSet<N>::isZero() const {
-    for (const Word word : mStorage) {
-        if (word != 0)
-            return false;
-    }
-    return true;
-}
-
-template <int N>
-inline int BitSet<N>::countOnBit() const {
-    int count = 0;
-    for (const Word word : mStorage) {
-        count += sead::BitFlagUtil::countOnBit(word);
-    }
-    return count;
-}
-
-template <int N>
-inline int BitSet<N>::countRightOnBit(int bit) const {
-    int count = 0;
-    const auto last_word_index = u32(bit / BitsPerWord);
-    for (u32 i = 0; i < last_word_index; ++i) {
-        count += sead::BitFlagUtil::countOnBit(mStorage[i]);
-    }
-    count += sead::BitFlagUtil::countRightOnBit(mStorage[last_word_index], bit % BitsPerWord);
-    return count;
-}
-
-}  // namespace ksys::util