Remove @brief annotations from Rust API docs (backport #20769) (#20807)

* Remove @brief annotations from Rust API docs (#20769)

(cherry picked from commit d9b0fc0e3e)

# Conflicts:
#	programs/bpf/rust/invoke/src/instructions.rs
#	programs/bpf/rust/invoke/src/processor.rs
#	programs/bpf/rust/realloc/src/instructions.rs
#	programs/bpf/rust/realloc/src/lib.rs
#	programs/bpf/rust/realloc/src/processor.rs
#	programs/bpf/rust/realloc_invoke/src/instructions.rs
#	programs/bpf/rust/realloc_invoke/src/lib.rs
#	programs/bpf/rust/realloc_invoke/src/processor.rs
#	sdk/cargo-build-bpf/tests/crates/fail/src/lib.rs
#	sdk/src/precompiles.rs

* Fix conflicts

Co-authored-by: Brian Anderson <andersrb@gmail.com>
Co-authored-by: Tyera Eulberg <tyera@solana.com>

sdk/cargo-build-bpf/tests/crates/noop/src/lib.rs

@@ -1,4 +1,4 @@
-//! @brief Example Rust-based BPF noop program
+//! Example Rust-based BPF noop program
 
 extern crate solana_program;
 use solana_program::{

sdk/program/src/bpf_loader.rs

@@ -1,4 +1,4 @@
-//! @brief The latest Solana BPF loader.
+//! The latest Solana BPF loader.
 //!
 //! The BPF loader is responsible for loading, finalizing, and executing BPF
 //! programs.  Not all networks may support the latest loader.  You can use the

sdk/program/src/bpf_loader_deprecated.rs

@@ -1,4 +1,4 @@
-//! @brief The original and now deprecated Solana BPF loader.
+//! The original and now deprecated Solana BPF loader.
 //!
 //! The BPF loader is responsible for loading, finalizing, and executing BPF
 //! programs.

sdk/program/src/bpf_loader_upgradeable.rs

@@ -1,4 +1,4 @@
-//! @brief An Upgradeable Solana BPF loader.
+//! An Upgradeable Solana BPF loader.
 //!
 //! The upgradeable BPF loader is responsible for deploying, upgrading, and
 //! executing BPF programs.  The upgradeable loader allows a program's authority

sdk/program/src/entrypoint.rs

@@ -1,4 +1,4 @@
-//! @brief Solana Rust-based BPF program entry point supported by the latest
+//! Solana Rust-based BPF program entry point supported by the latest
 //! BPFLoader.  For more information see './bpf_loader.rs'
 
 extern crate alloc;

sdk/program/src/entrypoint_deprecated.rs

@@ -1,5 +1,5 @@
 #![allow(clippy::integer_arithmetic)]
-//! @brief Solana Rust-based BPF program entry point supported by the original
+//! Solana Rust-based BPF program entry point supported by the original
 //!  and now deprecated BPFLoader.  For more information see
 //!  './bpf_loader_deprecated.rs'
 

sdk/program/src/log.rs

@@ -1,4 +1,4 @@
-//! @brief Solana Rust-based BPF program logging
+//! Solana Rust-based BPF program logging
 
 use crate::account_info::AccountInfo;
 

sdk/program/src/program_memory.rs

@@ -1,4 +1,4 @@
-//! @brief Solana Rust-based BPF memory operations
+//! Solana Rust-based BPF memory operations
 
 /// Memcpy
 ///

sdk/program/src/program_stubs.rs

@@ -1,4 +1,4 @@
-//! @brief Syscall stubs when building for programs for non-BPF targets
+//! Syscall stubs when building for programs for non-BPF targets
 
 #![cfg(not(target_arch = "bpf"))]
 

sdk/src/builtins.rs

@@ -1,4 +1,4 @@
-//! @brief Solana builtin helper macros
+//! Solana builtin helper macros
 
 #[rustversion::since(1.46.0)]
 #[macro_export]

sdk/src/entrypoint_native.rs

@@ -1,4 +1,4 @@
-//! @brief Solana Native program entry point
+//! Solana Native program entry point
 
 use crate::{instruction::InstructionError, keyed_account::KeyedAccount, pubkey::Pubkey};