removed unnecessary receive function

src/Solaxy.sol

@@ -28,13 +28,6 @@ contract Solaxy is XRC20, ISolaxy {
         FEE_ADDRESS = feeAccount;
     }
 
-    /**
-     * @dev Fallback function to revert Ether transfers directly to the contract.
-     */
-    receive() external payable {
-        revert PayableErr();
-    }
-
     /**
      * @dev See {IERC4626-deposit}.
      */

src/XRC20.sol

@@ -9,20 +9,11 @@ import "@openzeppelin/[email protected]/token/ERC20/extensions/ERC20FlashMint.sol"
 abstract contract XRC20 is ERC20, ERC20Permit, ERC20Votes, ERC20FlashMint {
     // The following functions are overrides required by Solidity.
 
-    function _update(address from, address to, uint256 value)
-        internal
-        override(ERC20, ERC20Votes)
-    {
+    function _update(address from, address to, uint256 value) internal override(ERC20, ERC20Votes) {
         super._update(from, to, value);
     }
 
-    function nonces(address owner)
-        public
-        view
-        override(ERC20Permit, Nonces)
-        returns (uint256)
-    {
+    function nonces(address owner) public view override(ERC20Permit, Nonces) returns (uint256) {
         return super.nonces(owner);
     }
 }
-

src/interfaces/ISolaxy.sol

@@ -4,7 +4,6 @@ pragma solidity ^0.8.24;
 import {IERC4626} from "@openzeppelin/[email protected]/interfaces/IERC4626.sol";
 import {UD60x18} from "@prb/[email protected]/src/UD60x18.sol";
 
-error PayableErr();
 error Undersupply();
 error CannotBeZero();
 error SlippageError();

test/Solaxy.t.sol

@@ -3,11 +3,11 @@ pragma solidity ^0.8.19;
 
 import {Test} from "forge-std/Test.sol";
 import {Solaxy} from "../src/Solaxy.sol";
-import {PayableErr, RequiresM3ter} from "../src/interfaces/ISolaxy.sol";
+import {RequiresM3ter} from "../src/interfaces/ISolaxy.sol";
 import {IERC20} from "@openzeppelin/[email protected]/interfaces/IERC20.sol";
 import {IERC721} from "@openzeppelin/[email protected]/interfaces/IERC721.sol";
 
-contract SolaxyTestWithoutM3ter is Test {
+contract SolaxyUnitTest is Test {
     Solaxy public SLX;
     IERC20 public sDAI;
     address public here;
@@ -41,26 +41,22 @@ contract SolaxyTestWithoutM3ter is Test {
     }
 
     function testSendEtherToContract() public {
-        vm.expectRevert(PayableErr.selector); // expect a transaction revert during test.
+        vm.expectRevert(); // expect a transaction revert during test.
         payable(SLX_address).transfer(1 ether); // Sending 1 Ether to the contract
         assertEq(SLX_address.balance, 0 ether, "asset ether balance is still equal to zero");
     }
 
     function testNonM3terHolder() public {
         vm.expectRevert(RequiresM3ter.selector);
-        // Deposit sDAI to Solaxy contract
         SLX.deposit(sDAI_amountDeposited, here);
 
         vm.expectRevert(RequiresM3ter.selector);
-        // Withdraw sDAI from Solaxy contract
         SLX.withdraw(sDAI_amountWithdrawn, here, here);
 
         vm.expectRevert(RequiresM3ter.selector);
-        // Mint new SLX tokens
         SLX.mint(SLX_amountMinted, here);
 
         vm.expectRevert(RequiresM3ter.selector);
-        // Redeem SLX tokens
         SLX.redeem(SLX_amountIn, here, here);
     }