make the safe function without a data field non virtual

contracts/token/ERC721/ERC721.sol

@@ -164,7 +164,7 @@ abstract contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Er
     /**
      * @dev See {IERC721-safeTransferFrom}.
      */
-    function safeTransferFrom(address from, address to, uint256 tokenId) public virtual {
+    function safeTransferFrom(address from, address to, uint256 tokenId) public {
         safeTransferFrom(from, to, tokenId, "");
     }
 
@@ -300,7 +300,7 @@ abstract contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Er
      *
      * Emits a {Transfer} event.
      */
-    function _safeMint(address to, uint256 tokenId) internal virtual {
+    function _safeMint(address to, uint256 tokenId) internal {
         _safeMint(to, tokenId, "");
     }
 
@@ -372,6 +372,15 @@ abstract contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Er
      *
      * Emits a {Transfer} event.
      */
+    function _safeTransfer(address from, address to, uint256 tokenId) internal {
+        _transfer(from, to, tokenId);
+        _checkOnERC721Received(from, to, tokenId, "");
+    }
+
+    /**
+     * @dev Same as {xref-ERC721-_safeTransfer-address-address-uint256-}[`_safeTransfer`], with an additional `data` parameter which is
+     * forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
+     */
     function _safeTransfer(address from, address to, uint256 tokenId, bytes memory data) internal virtual {
         _transfer(from, to, tokenId);
         _checkOnERC721Received(from, to, tokenId, data);