Removed `--dev` precompiles genesis balances

Having genesis balances for precompiles it not required for any particular use cases.

Removing them however have a benefit of improve testability of some edge cases that happened in the wild on Mainnet and probably other networks.

The test case it enables is to send eth eth to a previously "empty account" precompiles. If all precompiles account have a genesis balance, it's not possible to test this case.

Over Discord, it seems this was to align more with some other clients, for extra context.

core/genesis.go

@@ -615,22 +615,13 @@ func DeveloperGenesisBlock(gasLimit uint64, faucet *common.Address) *Genesis {
 	// Override the default period to the user requested one
 	config := *params.AllDevChainProtocolChanges
 
-	// Assemble and return the genesis with the precompiles and faucet pre-funded
+	// Assemble and return the genesis with the system contracts configured and faucet pre-funded
 	genesis := &Genesis{
 		Config:     &config,
 		GasLimit:   gasLimit,
 		BaseFee:    big.NewInt(params.InitialBaseFee),
 		Difficulty: big.NewInt(0),
 		Alloc: map[common.Address]types.Account{
-			common.BytesToAddress([]byte{1}): {Balance: big.NewInt(1)}, // ECRecover
-			common.BytesToAddress([]byte{2}): {Balance: big.NewInt(1)}, // SHA256
-			common.BytesToAddress([]byte{3}): {Balance: big.NewInt(1)}, // RIPEMD
-			common.BytesToAddress([]byte{4}): {Balance: big.NewInt(1)}, // Identity
-			common.BytesToAddress([]byte{5}): {Balance: big.NewInt(1)}, // ModExp
-			common.BytesToAddress([]byte{6}): {Balance: big.NewInt(1)}, // ECAdd
-			common.BytesToAddress([]byte{7}): {Balance: big.NewInt(1)}, // ECScalarMul
-			common.BytesToAddress([]byte{8}): {Balance: big.NewInt(1)}, // ECPairing
-			common.BytesToAddress([]byte{9}): {Balance: big.NewInt(1)}, // BLAKE2b
 			// Pre-deploy system contracts
 			params.BeaconRootsAddress:        {Nonce: 1, Code: params.BeaconRootsCode, Balance: common.Big0},
 			params.HistoryStorageAddress:     {Nonce: 1, Code: params.HistoryStorageCode, Balance: common.Big0},