Remove dead code for walletFile check

SplitWalletPath() garanties the walletFile is a plain filename without a
directory.

Author: hebasto

src/wallet/db.cpp

@@ -407,13 +407,6 @@ bool BerkeleyBatch::VerifyEnvironment(const fs::path& file_path, std::string& er
     LogPrintf("Using BerkeleyDB version %s\n", DbEnv::version(nullptr, nullptr, nullptr));
     LogPrintf("Using wallet %s\n", file_path.string());
 
-    // Wallet file must be a plain filename without a directory
-    if (walletFile != fs::basename(walletFile) + fs::extension(walletFile))
-    {
-        errorStr = strprintf(_("Wallet %s resides outside wallet directory %s"), walletFile, walletDir.string());
-        return false;
-    }
-
     if (!env->Open(true /* retry */)) {
         errorStr = strprintf(_("Error initializing wallet database environment %s!"), walletDir);
         return false;