wallet: Remove GetClosestWalletFeature()

src/wallet/walletutil.cpp

@@ -37,15 +37,6 @@ bool IsFeatureSupported(int wallet_version, int feature_version)
     return wallet_version >= feature_version;
 }
 
-WalletFeature GetClosestWalletFeature(int version)
-{
-    static constexpr std::array wallet_features{FEATURE_LATEST, FEATURE_PRE_SPLIT_KEYPOOL, FEATURE_NO_DEFAULT_KEY, FEATURE_HD_SPLIT, FEATURE_HD, FEATURE_COMPRPUBKEY, FEATURE_WALLETCRYPT, FEATURE_BASE};
-    for (const WalletFeature& wf : wallet_features) {
-        if (version >= wf) return wf;
-    }
-    return static_cast<WalletFeature>(0);
-}
-
 WalletDescriptor GenerateWalletDescriptor(const CExtPubKey& master_key, const OutputType& addr_type, bool internal)
 {
     int64_t creation_time = GetTime();

src/wallet/walletutil.h

@@ -31,7 +31,6 @@ enum WalletFeature
 };
 
 bool IsFeatureSupported(int wallet_version, int feature_version);
-WalletFeature GetClosestWalletFeature(int version);
 
 enum WalletFlags : uint64_t {
     // wallet flags in the upper section (> 1 << 31) will lead to not opening the wallet if flag is unknown