core/vm: remove panic when address is not present (ethereum#30414)

Remove redundant address presence check in `makeGasSStoreFunc`.

This PR simplifies the `makeGasSStoreFunc` function by removing the
redundant check for address presence in the access list. The updated
code now only checks for slot presence, streamlining the logic and
eliminating unnecessary panic conditions.

This change removes the unnecessary address presence check, simplifying
the code and improving maintainability without affecting functionality.
The previous panic condition was intended as a canary during the testing
phases (i.e. _YOLOv2_) and is no longer needed.

Author: achmand

core/vm/operations_acl.go

@@ -39,16 +39,10 @@ func makeGasSStoreFunc(clearingRefund uint64) gasFunc {
 			cost    = uint64(0)
 		)
 		// Check slot presence in the access list
-		if addrPresent, slotPresent := evm.StateDB.SlotInAccessList(contract.Address(), slot); !slotPresent {
+		if _, slotPresent := evm.StateDB.SlotInAccessList(contract.Address(), slot); !slotPresent {
 			cost = params.ColdSloadCostEIP2929
 			// If the caller cannot afford the cost, this change will be rolled back
 			evm.StateDB.AddSlotToAccessList(contract.Address(), slot)
-			if !addrPresent {
-				// Once we're done with YOLOv2 and schedule this for mainnet, might
-				// be good to remove this panic here, which is just really a
-				// canary to have during testing
-				panic("impossible case: address was not present in access list during sstore op")
-			}
 		}
 		value := common.Hash(y.Bytes32())