fix(docs): remove deprecated issue from faq

Author: nikerzetic-aflabs

docs/support/faqs.mdx

@@ -21,83 +21,6 @@ import SetEvmVersionRemix from "/static/img/set-evm-version-remix.png";
 
 This page answers common questions encountered by developers building applications on Flare networks.
 
-## Technical Troubleshooting
-
-### Why am I getting `invalid opcode: opcode 0x5f not defined` when deploying or interacting with my contract?
-
-**Cause:** This error typically occurs because your contract was compiled with a Solidity version (usually >=0.8.20) that defaults to the `shanghai` EVM version (or later), which introduced the `PUSH0` (0x5f) opcode. Flare and Songbird currently support EVM versions up to `london`, which does not recognize this opcode.
-
-**Solution:** You need to explicitly tell your compiler to target the `london` EVM version.
-
-- **Using Remix:** Set EVM version to `london` in the **Advanced Configurations** section of the **Solidity Compiler** tab:
-
-  <img src={SetEvmVersionRemix} style={{ width: 300 }} />
-
-- **Using Hardhat:** Set `evmVersion: "london"` within the `solidity` configuration object in your `hardhat.config.ts` (or `.js`):
-
-  ```typescript
-  // hardhat.config.ts
-  import { HardhatUserConfig } from "hardhat/config";
-  // ... other imports
-
-  const config: HardhatUserConfig = {
-    solidity: {
-      version: "0.8.24", // Example version
-      settings: {
-        optimizer: {
-          enabled: true,
-          runs: 200,
-        },
-        evmVersion: "london", // Add this line
-      },
-    },
-    // ... other configurations
-  };
-
-  export default config;
-  ```
-
-  _See the [Hardhat Starter Kit config](https://github.com/flare-foundation/flare-hardhat-starter/blob/master/hardhat.config.ts#L34) for a full example._
-
-- **Using Foundry:** Add `evm_version = "london"` under the `[profile.default]` section in your `foundry.toml`:
-
-  ```toml
-  # foundry.toml
-  [profile.default]
-  src = "src"
-  out = "out"
-  libs = ["lib"]
-  # ... other settings
-  evm_version = "london" # Add this line
-  ```
-
-  _See the [Foundry Starter Kit config](https://github.com/flare-foundation/flare-foundry-starter/blob/master/foundry.toml) for a full example._
-
-- **Using Standard Solidity JSON Input:** Set `evmVersion` to `london` within the `settings` object:
-
-  ```json
-  {
-    "language": "Solidity",
-    "sources": {
-      /* ... */
-    },
-    "settings": {
-      "optimizer": {
-        /* ... */
-      },
-      "evmVersion": "london", // Set this
-      "outputSelection": {
-        /* ... */
-      }
-    }
-  }
-  ```
-
-- **Using `solc` CLI:** Use the `--evm-version london` flag:
-  ```bash
-  solc --evm-version london --optimize --abi --bin YourContract.sol -o build/
-  ```
-
 ## Network & Tokens
 
 ### Where can I get testnet tokens (faucet)?