chore: remove some allow attributes for fixed clippy bugs (#1944)

examples/apps/table/src/main.rs

@@ -77,20 +77,14 @@ impl Data {
         [&self.name, &self.address, &self.email]
     }
 
-    // https://github.com/rust-lang/rust/issues/139338
-    #[allow(clippy::missing_const_for_fn)]
     fn name(&self) -> &str {
         &self.name
     }
 
-    // https://github.com/rust-lang/rust/issues/139338
-    #[allow(clippy::missing_const_for_fn)]
     fn address(&self) -> &str {
         &self.address
     }
 
-    // https://github.com/rust-lang/rust/issues/139338
-    #[allow(clippy::missing_const_for_fn)]
     fn email(&self) -> &str {
         &self.email
     }

ratatui-core/src/buffer/buffer.rs

@@ -104,8 +104,6 @@ impl Buffer {
     }
 
     /// Returns the content of the buffer as a slice
-    // https://github.com/rust-lang/rust/issues/139338
-    #[allow(clippy::missing_const_for_fn)]
     pub fn content(&self) -> &[Cell] {
         &self.content
     }