chore(docs): remove SFS references and related files

SUMMARY.md

@@ -32,18 +32,6 @@
 ## Tutorials
 
 * [Interacting with Smart Contracts using ethers.js](build-on-mode/interacting-with-smart-contracts-using-ethers.js.md)
-* [SFS - Sequencer Fee Sharing](build-on-mode/sfs-sequencer-fee-sharing/README.md)
-  * [Register a Smart Contract](build-on-mode/sfs-sequencer-fee-sharing/register-a-smart-contract/README.md)
-    * [SFS - Registering a contract with Remix](build-on-mode/sfs-sequencer-fee-sharing/register-a-smart-contract/sfs-registering-a-contract-with-remix.md)
-    * [SFS - Register a Smart Contract with Thirdweb](build-on-mode/sfs-sequencer-fee-sharing/register-a-smart-contract/sfs-register-a-smart-contract-with-thirdweb.md)
-    * [SFS - Register a Smart Contract with Hardhat](build-on-mode/sfs-sequencer-fee-sharing/register-a-smart-contract/sfs-register-a-smart-contract-with-hardhat.md)
-  * [Assign a Smart Contract](build-on-mode/sfs-sequencer-fee-sharing/assign-a-smart-contract/README.md)
-    * [SFS - Assign a contract to an existing NFT with Hardhat](build-on-mode/sfs-sequencer-fee-sharing/assign-a-smart-contract/sfs-assign-a-contract-to-an-existing-nft-with-hardhat.md)
-  * [Withdraw from the SFS](build-on-mode/sfs-sequencer-fee-sharing/withdraw-from-the-sfs/README.md)
-    * [With a wallet](build-on-mode/sfs-sequencer-fee-sharing/withdraw-from-the-sfs/with-a-wallet.md)
-    * [With a smart contract](build-on-mode/sfs-sequencer-fee-sharing/withdraw-from-the-sfs/with-a-smart-contract.md)
-  * [Check the SFS registry](build-on-mode/sfs-sequencer-fee-sharing/check-the-sfs-registry.md)
-  * [SFS FAQ](introduction/sequencer-fee-sharing/faq.md)
 * [Deploying a Smart Contract](build-on-mode/deploying-a-smart-contract/README.md)
   * [Using Hardhat](build-on-mode/deploying-a-smart-contract/using-hardhat.md)
   * [Using Thirdweb](build-on-mode/deploying-a-smart-contract/using-thirdweb.md)

build-on-mode/deploying-a-smart-contract/using-foundry.md

@@ -134,5 +134,3 @@ In the "Contract" tab you'll find your verified contract.
 Congratulations, you just deployed and verified a contract on Mode Network using Foundry. 
 
 To learn more about Mode and how to turn your code into a business, join our [Discord](https://discord.gg/modenetworkofficial) and say hello 👋
-
-If you want the next challenge, you can try registering a contract for the SFS following this guide: [sfs-registering-a-contract-with-remix.md](../sfs-sequencer-fee-sharing/register-a-smart-contract/sfs-registering-a-contract-with-remix.md "mention")\

build-on-mode/deploying-a-smart-contract/using-hardhat.md

@@ -178,6 +178,3 @@ Input the contract address from the console to view its details.
 Congratulations! You've successfully deployed a smart contract on the Mode Testnet using Hardhat and TypeScript.\
 \
 To learn more about Mode and how to turn your code into a business, join our [Discord](https://discord.gg/modenetworkofficial) and say hello 👋
-
-If you want the next challenge, you can try registering a contract for the SFS following this guide: [sfs-registering-a-contract-with-remix.md](../sfs-sequencer-fee-sharing/register-a-smart-contract/sfs-registering-a-contract-with-remix.md "mention")\
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build-on-mode/deploying-a-smart-contract/using-remix.md

@@ -107,7 +107,3 @@ Notice that if you call one of the smart contract methods in Remix, you should s
 In this tutorial, we also went through the Mode bridge, block explorer, and how to interact with your contract. 
 
 To learn more about Mode and how to turn your code into a business, join our [Discord](https://discord.gg/modenetworkofficial) and say hello 👋
-
-If you want the next challenge, you can try registering a contract for the SFS following this guide: [sfs-registering-a-contract-with-remix.md](../sfs-sequencer-fee-sharing/register-a-smart-contract/sfs-registering-a-contract-with-remix.md "mention")
-
-\

build-on-mode/deploying-a-smart-contract/using-thirdweb.md

@@ -110,6 +110,3 @@ One of the features we liked the most was the “Build” tab in your smart cont
 <figure><img src="https://lh3.googleusercontent.com/aWeDDj0x77Elg_9l0l0mdkf-U9mt7QCCUgCVHo9OzlL6GYHo5cQxdTgx_ccRWeHyEBGimHbA0cK95bc3FGxH2Oa-fGyBhR2Ya9biR7S6WsKXWrzyK4uVeUlbVECYK8_4xE_fKlpmJbjb8LiT7piqng0" alt=""><figcaption></figcaption></figure>
 
 Congratulations! Now you have created and deployed a smart contract on Mode using the Thirdweb CLI. To learn more about Mode and how to turn your code into a business, join our [Discord](https://discord.gg/modenetworkofficial) and say hello 👋
-
-If you want the next challenge, you can try registering a contract for the SFS following this guide: [sfs-registering-a-contract-with-remix.md](../sfs-sequencer-fee-sharing/register-a-smart-contract/sfs-registering-a-contract-with-remix.md "mention")\
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