diff --git a/consensus/polybft/polybft.go b/consensus/polybft/polybft.go
index 0b85c59661..664b254695 100644
--- a/consensus/polybft/polybft.go
+++ b/consensus/polybft/polybft.go
@@ -81,7 +81,7 @@ type Polybft struct {
 	// closeCh is used to signal that consensus protocol is stopped
 	closeCh chan struct{}
 
-	// ibft is the ibft engine
+	// ibft is the wrapper around ibft consensus engine
 	ibft *IBFTConsensusWrapper
 
 	// state is reference to the struct which encapsulates consensus data persistence logic
diff --git a/e2e/framework/config.go b/e2e/framework/config.go
index c3dccf2e3a..cdc3275273 100644
--- a/e2e/framework/config.go
+++ b/e2e/framework/config.go
@@ -38,7 +38,6 @@ type TestServerConfig struct {
 	Bootnodes               []string        // Bootnode Addresses
 	PriceLimit              *uint64         // Minimum gas price limit to enforce for acceptance into the pool
 	DevInterval             int             // Dev consensus update interval [s]
-	EpochSize               uint64          // The epoch size in blocks for the IBFT layer
 	BlockGasLimit           uint64          // Block gas limit
 	BlockGasTarget          uint64          // Gas target for new blocks
 	BaseFee                 uint64          // Initial base fee
@@ -47,8 +46,7 @@ type TestServerConfig struct {
 	SaveLogs                bool            // Flag specifying if logs are saved
 	LogsDir                 string          // Directory where logs are saved
 	Signer                  crypto.TxSigner // Signer used for transactions
-	BlockTime               uint64          // Minimum block generation time (in s)
-	BurnContracts           map[uint64]types.Address
+
 }
 
 // DataDir returns path of data directory server uses
@@ -56,14 +54,6 @@ func (t *TestServerConfig) DataDir() string {
 	return t.RootDir
 }
 
-func (t *TestServerConfig) SetSigner(signer crypto.TxSigner) {
-	t.Signer = signer
-}
-
-func (t *TestServerConfig) SetBlockTime(blockTime uint64) {
-	t.BlockTime = blockTime
-}
-
 // CALLBACKS //
 
 // Premine callback specifies an account with a balance (in WEI)
@@ -88,15 +78,6 @@ func (t *TestServerConfig) SetBlockGasTarget(target uint64) {
 	t.BlockGasTarget = target
 }
 
-// SetBurnContract sets the given burn contract for the test server
-func (t *TestServerConfig) SetBurnContract(block uint64, address types.Address) {
-	if t.BurnContracts == nil {
-		t.BurnContracts = map[uint64]types.Address{}
-	}
-
-	t.BurnContracts[block] = address
-}
-
 // SetConsensus callback sets consensus
 func (t *TestServerConfig) SetConsensus(c ConsensusType) {
 	t.Consensus = c
@@ -127,12 +108,6 @@ func (t *TestServerConfig) SetShowsLog(f bool) {
 	t.ShowsLog = f
 }
 
-// SetEpochSize sets the epoch size for the consensus layer.
-// It controls the rate at which the validator set is updated
-func (t *TestServerConfig) SetEpochSize(epochSize uint64) {
-	t.EpochSize = epochSize
-}
-
 // SetSaveLogs sets flag for saving logs
 func (t *TestServerConfig) SetSaveLogs(f bool) {
 	t.SaveLogs = f
diff --git a/e2e/framework/helper.go b/e2e/framework/helper.go
index bcd8b25ace..e3c409ea52 100644
--- a/e2e/framework/helper.go
+++ b/e2e/framework/helper.go
@@ -332,8 +332,8 @@ func NewTestServers(t *testing.T, num int, conf func(*TestServerConfig)) []*Test
 		t.Fatal(err)
 	}
 
-	// It is safe to use a dummy MultiAddr here, since this init method
-	// is called for the Dev consensus mode, and IBFT servers are initialized with NewIBFTServersManager.
+	// It is safe to use a dummy MultiAddr here,
+	// since this init method is called for the Dev consensus mode
 	// This method needs to be standardized in the future
 	bootnodes := []string{tests.GenerateTestMultiAddr(t).String()}
 
diff --git a/e2e/framework/testserver.go b/e2e/framework/testserver.go
index ea38d90991..436d64e885 100644
--- a/e2e/framework/testserver.go
+++ b/e2e/framework/testserver.go
@@ -175,13 +175,6 @@ func (t *TestServer) GenerateGenesis() error {
 		args = append(args, "--premine", acct.Addr.String()+":0x"+acct.Balance.Text(16))
 	}
 
-	// provide block time flag
-	// (e2e framework expects BlockTime parameter to be provided in seconds)
-	if t.Config.BlockTime != 0 {
-		args = append(args, "--block-time",
-			(time.Duration(t.Config.BlockTime) * time.Second).String())
-	}
-
 	// add consensus flags
 	switch t.Config.Consensus {
 	case ConsensusDev:
@@ -207,15 +200,8 @@ func (t *TestServer) GenerateGenesis() error {
 		args = append(args, "--base-fee-config", *common.EncodeUint64(t.Config.BaseFee))
 	}
 
-	// add burn contracts
-	if len(t.Config.BurnContracts) != 0 {
-		for block, addr := range t.Config.BurnContracts {
-			args = append(args, "--burn-contract", fmt.Sprintf("%d:%s", block, addr))
-		}
-	} else {
-		// london hardfork is enabled by default so there must be a default burn contract
-		args = append(args, "--burn-contract", "0:0x0000000000000000000000000000000000000000")
-	}
+	// london hardfork is enabled by default so there must be a default burn contract
+	args = append(args, "--burn-contract", "0:0x0000000000000000000000000000000000000000")
 
 	cmd := exec.Command(resolveBinary(), args...) //nolint:gosec
 	cmd.Dir = t.Config.RootDir