fix: removed depracated gateway token manager type (#1260)

src/content/docs/dev/send-tokens/interchain-tokens/token-manager.mdx

@@ -4,7 +4,7 @@
 
 ## Token Manager Types
 
-There are different [types](https://github.com/axelarnetwork/interchain-token-service/blob/main/contracts/interfaces/ITokenManagerType.sol#L10) of token managers available for developers to offer different types of integrations to ITS. These are; `nativeInterchain`, `mintBurnFrom`, `lockUnlock`, `lockUnlockFee`, `mintBurn`, and `gateway`.
+There are different [types](https://github.com/axelarnetwork/interchain-token-service/blob/main/contracts/interfaces/ITokenManagerType.sol#L10) of token managers available for developers to offer different types of integrations to ITS. These are; `nativeInterchain`, `mintBurnFrom`, `lockUnlock`, `lockUnlockFee`, and `mintBurn`.
 
 Each of these types correspond to an `enum` value. When [deploying a token manager](https://github.com/axelarnetwork/interchain-token-service/blob/7df851d8a4ec4df819961d704bf3067ee8d37521/contracts/InterchainTokenService.sol#L286) developers must pass in the [corresponding value](https://github.com/axelarnetwork/interchain-token-service/blob/main/contracts/InterchainTokenService.sol#L289) for their desired token manager type.
 
@@ -13,7 +13,6 @@ Each of these types correspond to an `enum` value. When [deploying a token manag
 `Lock/Unlock`: `2`  
 `Lock/UnlockFee`: `3`  
 `Mint/Burn`: `4`  
-`Gateway`: `5`
 
 ### Native Interchain Token
 
@@ -45,10 +44,6 @@ The `mint/burn` token manager type is the most common token manager type used fo
 
 For more details checkout this [Mint/Burn example](https://github.com/axelarnetwork/axelar-examples/tree/main/examples/evm/its-custom-token)
 
-### Gateway
-
-For tokens that will be connected with the AxelarGateway this Gateway manager type is also available. It will allow tokens to be sent cross-chain via the `callContractWithToken()` function
-
 ## Flow Limits
 
 Token Managers handle the flow limits for a token's ITS integration. A `flowLimit` is a set amount that controls the amount in which a token can be sent in/out of a given blockchain. This can have a variety of different usecases including for security emergencies on a given chain where you want to restrict the flow of your token for that particular blockchain.