Remove gas payments from kathy (#840)

typescript/helloworld/src/app/app.ts

@@ -1,4 +1,4 @@
-import { BigNumber, ethers } from 'ethers';
+import { ethers } from 'ethers';
 
 import { TypedListener } from '@abacus-network/core/dist/common';
 import {
@@ -19,7 +19,6 @@ export class HelloWorldApp<
     from: From,
     to: Remotes<Chain, From>,
     message: string,
-    value: BigNumber,
     receiveHandler?: TypedListener<ReceivedHelloWorldEvent>,
   ): Promise<ethers.ContractReceipt> {
     const sender = this.getContracts(from).router;
@@ -37,7 +36,6 @@ export class HelloWorldApp<
     const tx = await sender.sendHelloWorld(toDomain, message, {
       ...chainConnection.overrides,
       gasLimit,
-      value,
     });
     const receipt = await tx.wait(chainConnection.confirmations);
 

typescript/infra/scripts/helloworld/kathy.ts

@@ -106,16 +106,8 @@ async function sendMessage(
   gasCalc: InterchainGasCalculator<any>,
 ) {
   const msg = 'Hello!';
-  const expected = {
-    origin,
-    destination,
-    sender: app.getContracts(origin).router.address,
-    recipient: app.getContracts(destination).router.address,
-    body: msg,
-  };
-  const value = await gasCalc.estimatePaymentForMessage(expected);
   console.log(`Sending message from ${origin} to ${destination}`);
-  const receipt = await app.sendHelloWorld(origin, destination, msg, value);
+  const receipt = await app.sendHelloWorld(origin, destination, msg);
   console.log(JSON.stringify(receipt.events || receipt.logs));
 }