core: set gas limit to transaction.SystemFee for all transactions

config/protocol.mainnet.yml

@@ -19,7 +19,6 @@ ProtocolConfiguration:
   - seed5.neo.org:10333
   VerifyBlocks: true
   VerifyTransactions: false
-  FreeGasLimit: 10.0
   MaxTransactionsPerBlock: 500
   MaxFreeTransactionsPerBlock: 20
   MaxFreeTransactionSize: 1024

config/protocol.testnet.yml

@@ -19,7 +19,6 @@ ProtocolConfiguration:
   - seed5t.neo.org:20333
   VerifyBlocks: true
   VerifyTransactions: false
-  FreeGasLimit: 10.0
   MaxTransactionsPerBlock: 500
   MaxFreeTransactionsPerBlock: 20
   MaxFreeTransactionSize: 1024

pkg/config/protocol_config.go

@@ -2,7 +2,6 @@ package config
 
 import (
 	"github.com/nspcc-dev/neo-go/pkg/config/netmode"
-	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // ProtocolConfiguration represents the protocol config.
@@ -11,8 +10,6 @@ type (
 		// FeePerExtraByte sets the expected per-byte fee for
 		// transactions exceeding the MaxFreeTransactionSize.
 		FeePerExtraByte         float64       `yaml:"FeePerExtraByte"`
-		// FreeGasLimit is an amount of GAS which can be spent for free.
-		FreeGasLimit            util.Fixed8   `yaml:"FreeGasLimit"`
 		LowPriorityThreshold    float64       `yaml:"LowPriorityThreshold"`
 		Magic                   netmode.Magic `yaml:"Magic"`
 		MaxTransactionsPerBlock int           `yaml:"MaxTransactionsPerBlock"`

pkg/core/blockchain.go

@@ -605,9 +605,7 @@ func (bc *Blockchain) storeBlock(block *block.Block) error {
 		v := SpawnVM(systemInterop)
 		v.LoadScriptWithFlags(tx.Script, smartcontract.All)
 		v.SetPriceGetter(getPrice)
-		if bc.config.FreeGasLimit > 0 {
-			v.GasLimit = bc.config.FreeGasLimit + tx.SystemFee
-		}
+		v.GasLimit = tx.SystemFee
 
 		err := v.Run()
 		if !v.HasFailed() {