chore: remove metahash

docs/developing-contracts/metadata.md

@@ -59,17 +59,3 @@ As a result of the smart-contract compilation, a `meta.txt` file will be generat
 ```
 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
 ```
-
-## Verify metadata
-
-To make it possible to verify metadata for a program, you can use the `metahash()` function. It allows verifying metadata on-chain.
-
-```rust
-#[no_mangle]
-// It returns the Hash of metadata.
-// .metahash is generating automatically while you are using build.rs
-extern "C" fn metahash() {
-    let metahash: [u8; 32] = include!("../.metahash");
-    msg::reply(metahash, 0).expect("Failed to share metahash");
-}
-```

docs/examples/ping.md

@@ -76,14 +76,6 @@ extern "C" fn state() {
     );
 }
 ```
--  `metahash()` function that returns the metadata hash:
-```rust
-#[no_mangle]
-extern "C" fn metahash() {
-    reply(include!("../.metahash"))
-        .expect("Failed to encode or reply with `[u8; 32]` from `metahash()`");
-}
-```
 
 The `lib.rs` file in the `src` directory contains the following code:
 ```

i18n/zh-cn/docusaurus-plugin-content-docs/current/developing-contracts/metadata.md

@@ -60,17 +60,3 @@ fn main() {
 ```
 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
 ```
-
-## 验证元数据
-
-为了验证程序的元数据，可以使用`metahash()`函数。它允许在链上验证元数据。
-
-```rust
-#[no_mangle]
-// It returns the Hash of metadata.
-// .metahash is generating automatically while you are using build.rs
-extern "C" fn metahash() {
-    let metahash: [u8; 32] = include!("../.metahash");
-    msg::reply(metahash, 0).expect("Failed to share metahash");
-}
-```