lnhtlc: remove unnecessary double application of pending feerate

lib/lnhtlc.py

@@ -188,7 +188,6 @@ class HTLCStateMachine(PrintError):
             self.pending_ack_fee_update = self.pending_fee_update
             self.pending_fee_update = None
 
-        with PendingFeerateApplied(self):
         sig_64 = sign_and_get_sig_string(self.pending_remote_commitment, self.local_config, self.remote_config)
 
         their_remote_htlc_privkey_number = derive_privkey(
@@ -238,7 +237,6 @@ class HTLCStateMachine(PrintError):
             self.pending_ack_fee_update = self.pending_fee_update
             self.pending_fee_update = None
 
-        with PendingFeerateApplied(self):
         preimage_hex = self.pending_local_commitment.serialize_preimage(0)
         pre_hash = Hash(bfh(preimage_hex))
         if not ecc.verify_signature(self.remote_config.multisig_key.pubkey, sig, pre_hash):