docs: Remove references to asset-transfer-api. (#6842)

Author: andrew-ifrita

docs/general/build-open-source.md

@@ -112,7 +112,7 @@ In the below sections, you can find a list of different layers of the Polkadot S
 | No-code Platforms               | [EzCode's Polkadot-JS plugin on Bubble.io](https://github.com/NovaBloq/Bubble-Plugin-Polkadot.js) ⚪, [Blackprint Visual Programming Polkadot-JS module](https://github.com/Blackprint/nodes-polkadot.js) ⚪, [SubRelay](https://github.com/subrelay/interface) ⚪|                                                                                                                  |
 | Wallets                         | [DOT Connect](https://github.com/tien/dot-connect) 🟢, [Talisman Connect](https://github.com/TalismanSociety/talisman-connect) ⚪, [SubWallet-SubConnect](https://github.com/Koniverse/SubConnect) ⚪, [Metadata Portal](https://github.com/nova-wallet/metadata-portal) 🟢, [Tesseract](https://github.com/tesseract-one/Tesseract.rs) ⚪, [WalletConnect](https://github.com/w3f-grants-archive/walletconnect-v2-monorepo) ⚪, [BitGoJS](https://github.com/BitGo/BitGoJS/tree/master) 🟢|                                                                                                                  |
 | XCM                             | [Trappist](https://github.com/paritytech/trappist) ⚪, [XCM-tools](https://github.com/Moonsong-Labs/xcm-tools) 🟡, [XCM-tools Golang](https://github.com/itering/substrate-api-rpc) 🟡,[ParaSpell XCM Tools](https://github.com/paraspell/xcm-tools) 🟢, [XBI](https://github.com/t3rn/xbi) ⚪, [XCM TS/JS SDK](https://github.com/blockcoders/xcm-sdk) ⚪, [XCMSend](https://github.com/XcmSend/app) ⚪, [XCM Monitoring Server](https://github.com/sodazone/xcm-monitoring/) 🟢, [Moonbeam Foundation XCM-SDK](https://github.com/moonbeam-foundation/xcm-sdk) 🟢|                                                                                                                  |
-| Other                           | [asset-transfer-api](https://github.com/paritytech/asset-transfer-api) 🟢, [txwrapper-core](https://github.com/paritytech/txwrapper-core) ⚪, [open-web3 JS library](https://github.com/open-web3-stack/open-web3.js) ⚪, [VM-Bridge](https://github.com/CycanTech/GVM-Bridge) ⚪, [srtool](https://github.com/paritytech/srtool) 🟢, [srtool-cli](https://github.com/chevdor/srtool-cli) ⚪, [Substrate Tip Bot](https://github.com/paritytech/substrate-tip-bot) 🟡, [ORI (Onchain Risk Intelligence)](https://github.com/syntifi/ori) ⚪, [PolkaTools](https://github.com/albertov19/PolkaTools) 🟢, [polkadot-scripts](https://github.com/paritytech/polkadot-scripts) 🟡, [Sube](https://github.com/virto-network/sube) 🟡, [data-store-sidecar](https://github.com/CESSProject/data-store-sidecar) ⚪, [SugarFunge](https://github.com/SugarFunge/sugarfunge-node) ⚪, [substrate-wasmedge](https://github.com/second-state/substrate-wasmedge) ⚪, [EightFish](https://github.com/eightfish-org/eightfish) 🟡, [Sandox](https://github.com/sandoxio/sandox) ⚪, [APK verifier](https://github.com/darwinia-network/apk-verifier/) ⚪, [ElizaOS Plugin](https://github.com/Esscrypt/plugin-polkadot) 🟢|
+| Other                           | [txwrapper-core](https://github.com/paritytech/txwrapper-core) ⚪, [open-web3 JS library](https://github.com/open-web3-stack/open-web3.js) ⚪, [VM-Bridge](https://github.com/CycanTech/GVM-Bridge) ⚪, [srtool](https://github.com/paritytech/srtool) 🟢, [srtool-cli](https://github.com/chevdor/srtool-cli) ⚪, [Substrate Tip Bot](https://github.com/paritytech/substrate-tip-bot) 🟡, [ORI (Onchain Risk Intelligence)](https://github.com/syntifi/ori) ⚪, [PolkaTools](https://github.com/albertov19/PolkaTools) 🟢, [polkadot-scripts](https://github.com/paritytech/polkadot-scripts) 🟡, [Sube](https://github.com/virto-network/sube) 🟡, [data-store-sidecar](https://github.com/CESSProject/data-store-sidecar) ⚪, [SugarFunge](https://github.com/SugarFunge/sugarfunge-node) ⚪, [substrate-wasmedge](https://github.com/second-state/substrate-wasmedge) ⚪, [EightFish](https://github.com/eightfish-org/eightfish) 🟡, [Sandox](https://github.com/sandoxio/sandox) ⚪, [APK verifier](https://github.com/darwinia-network/apk-verifier/) ⚪, [ElizaOS Plugin](https://github.com/Esscrypt/plugin-polkadot) 🟢|
 
 ### ink! Smart Contracts