message: Remove WalletDatabase::Create, CreateMock, and CreateDummy
  These are superseded by CreateWalletDatabase, CreateMockWalletDatabase,
  and CreateDummyWalletDatabase
diff: @@ -120,25 +120,6 @@ public:
  }
  }
  - /** Return object for accessing database at specified path. */
  - static std::unique_ptr<BerkeleyDatabase> Create(const fs::path& path)
  - {
  - std::string filename;
  - return MakeUnique<BerkeleyDatabase>(GetWalletEnv(path, filename), std::move(filename));
  - }
  -
  - /** Return object for accessing dummy database with no read/write capabilities. */
  - static std::unique_ptr<BerkeleyDatabase> CreateDummy()
  - {
  - return MakeUnique<BerkeleyDatabase>();
  - }
  -
  - /** Return object for accessing temporary in-memory database. */
  - static std::unique_ptr<BerkeleyDatabase> CreateMock()
  - {
  - return MakeUnique<BerkeleyDatabase>(std::make_shared<BerkeleyEnvironment>(), "");
  - }
  -
  /** Rewrite the entire database on disk, with the exception of key pszSkip if non-zero
  */
  bool Rewrite(const char* pszSkip=nullptr);
  