Temporarily comment out storage related code in wallet example

This example should be updated after FuelLabs#646 lands.

examples/wallet_smart_contract/src/main.sw

@@ -1,13 +1,18 @@
+// NOTE: Storage is a work in progress (see
+// https://github.com/FuelLabs/sway/pull/646), but once it is implemented,
+// declaring storage should look like this.
+
 contract;
 
 use std::*;
+use std::chain::assert;
 
 const OWNER_ADDRESS: b256 = 0x8900c5bec4ca97d4febf9ceb4754a60d782abbf3cd815836c1872116f203f861;
 const ETH_ID: b256 = 0x0000000000000000000000000000000000000000000000000000000000000000;
 
-storage {
-    balance: u64,
-}
+// storage {
+//     balance: u64,
+// }
 
 abi Wallet {
     fn receive_funds(gas_to_forward: u64, coins_to_forward: u64, asset_id: b256, unused: ());
@@ -16,17 +21,17 @@ abi Wallet {
 
 impl Wallet for Contract {
     fn receive_funds(gas_to_forward: u64, coins_to_forward: u64, asset_id: b256, unused: ()) {
-        if asset_id == ETH_ID {
-            let balance = storage.balance.write();
-            deref balance = balance + coins_to_forward;
-        };
+        // if asset_id == ETH_ID {
+        //     let balance = storage.balance.write();
+        //     deref balance = balance + coins_to_forward;
+        // };
     }
 
     fn send_funds(gas_to_forward: u64, coins_to_forward: u64, asset_id: b256, req: SendFundsRequest) {
-        assert(sender() == OWNER_ADDRESS);
-        assert(storage.balance > req.amount_to_send);
-        storage.balance = storage.balance - req.amount_to_send;
-        transfer_coins(asset_id, req.recipient_address, req.amount_to_send);
+        // assert(sender() == OWNER_ADDRESS);
+        // assert(storage.balance > req.amount_to_send);
+        // storage.balance = storage.balance - req.amount_to_send;
+        // transfer_coins(asset_id, req.recipient_address, req.amount_to_send);
     }
 }