feat: remove reference to PayGasForContractCall (#622)

Remove gas references for non native gas call

src/pages/dev/general-message-passing/gas-services/pay-gas.mdx

@@ -84,25 +84,7 @@ function payNativeGasForContractCall(
 ```
 
 ## Alternative gas payment methods for `callContractWithToken`
-Similar to the available gas payment methods for `callContract`, there are two available methods to pay gas for relaying the `callContractWithToken`.
 
-### payGasForContractCallWithToken
-This method receives any tokens for the relayer fee. The paid gas for this method must be in tokens Axelar supports. See the list of supported assets: [Mainnet](../../reference/mainnet-contract-addresses) | [Testnet](../../reference/testnet-contract-addresses).
-
-```solidity
-// This is called on the source chain before calling the gateway to execute a remote contract.
-function payGasForContractCallWithToken(
-    address sender,
-    string calldata destinationChain,
-    string calldata destinationAddress,
-    bytes calldata payload,
-    string calldata symbol,
-    uint256 amount,
-    address gasToken,
-    uint256 gasFeeAmount,
-    address refundAddress
-) external;
-```
 
 ### payNativeGasForContractCallWithToken
 This method accepts the native tokens of the source chain.
@@ -125,19 +107,16 @@ The function names are prety self-explanatory. The following is true for the arg
 
 - For all functions:
   - `sender` needs to match the address that calls `callContract` or `callContractWithToken` on the `AxelarGateway`. If the `AxelarGasReceiver` is called by the same contract that will call the Gateway, then simply specify `address(this)` as `sender`.
-- For `payGasForContractCall` and `payNativeGasForContractCall`, the following need to match the arguments of a `contractCall` on the `AxelarGateway`:
+- For `payNativeGasForContractCall`, the following need to match the arguments of a `contractCall` on the `AxelarGateway`:
   - `destinationChain`
   - `destinationAddress`
   - `payload`
-- For `payGasForContractCallWtihToken` and `payNativeGasForContractCallWithToken`, the following need to match the arguments of a `contractCallWithToken` on the `AxelarGateway`:
+- For `payNativeGasForContractCallWithToken`, the following need to match the arguments of a `contractCallWithToken` on the `AxelarGateway`:
   - `destinationChain`
   - `destinationAddress`
   - `payload`
   - `symbol`
   - `amount`
-- For `payGasForContractCall` and `payGasForContractCallWtihToken`:
-  - `gasToken` is the address of the token that gas will be paid in. Ensure this token is supported by the network, using the Axelar API.
-  - `gasFeeAmount` is the amount of `gasToken` to transfer from the sender. The sender needs to have approved the `AxelarGasReceiver` with the appropriate amount to `gasToken` first.
 - For `payNativeGasForContractCall` and `payNativeGasForContractCallWithToken`, the amount of funds received is specified by `msg.value`.
 - For all functions, `refundAddress` is the address that will eventually be able to receive excess amount paid for gas.
 

src/pages/dev/general-message-passing/gas-services/refund.mdx

@@ -1,6 +1,7 @@
 # Refund the prepaid gas
 
-The prepaid gas to `payGasForContractCall` or `payGasForContractCallWithToken` could exceed the actual amount needed for relaying a message to the destination contract.
+The prepaid gas to `payNativeGasForContractCall` or `payNativeGasForContractCallWithToken` could exceed the actual amount needed for relaying a message to the destination contract.
+
 
 The Executor Service automatically tracks the excess gas amount and refund it to the payer's wallet address by calling `Refund` in the Gas Service contract.