wallet: do not store deployed contract script inside Contract account

`Contract` account field should not contain deployed contract script.

Close #3348

Signed-off-by: Ekaterina Pavlova <ekt@morphbits.io>

cli/testdata/wallet1_solo.json

@@ -65,7 +65,6 @@
       "key": "6PYSATFztBa3CHjSR6sLAKungUEAbQUCVE16KzmaQQ38gLeYGZ9Knd5mGv",
       "label": "verify",
       "contract": {
-        "script": "VwEAEUBXAANA",
         "parameters": [],
         "deployed": true
       },

cli/wallet/wallet.go

@@ -651,7 +651,8 @@ func importDeployed(ctx *cli.Context) error {
 		return cli.NewExitError("contract has no `verify` method with boolean return", 1)
 	}
 	acc.Address = address.Uint160ToString(cs.Hash)
-	acc.Contract.Script = cs.NEF.Script
+	// Explicitly overwrite single signature script of the provided WIF since the contract is known to be deployed.
+	acc.Contract.Script = nil
 	acc.Contract.Parameters = acc.Contract.Parameters[:0]
 	for _, p := range md.Parameters {
 		acc.Contract.Parameters = append(acc.Contract.Parameters, wallet.ContractParam{

pkg/wallet/regenerate_test.go

@@ -278,7 +278,6 @@ func TestRegenerateCLIWallet1_solo(t *testing.T) {
 	hash := state.CreateContractHash(acc3.PrivateKey().GetScriptHash(), nefFile.Checksum, m.Name)
 	acc4.Address = address.Uint160ToString(hash)
 	acc4.Contract = &Contract{
-		Script:     nefFile.Script,
 		Deployed:   true,
 		Parameters: []ContractParam{},
 	}