Remove unused unsafe declarations (#1901)

p2p/src/handshake.rs

@@ -41,9 +41,6 @@ pub struct Handshake {
 	config: P2PConfig,
 }
 
-unsafe impl Sync for Handshake {}
-unsafe impl Send for Handshake {}
-
 impl Handshake {
 	/// Creates a new handshake handler
 	pub fn new(genesis: Hash, config: P2PConfig) -> Handshake {

p2p/src/peer.rs

@@ -52,9 +52,6 @@ pub struct Peer {
 	connection: Option<conn::Tracker>,
 }
 
-unsafe impl Sync for Peer {}
-unsafe impl Send for Peer {}
-
 impl Peer {
 	// Only accept and connect can be externally used to build a peer
 	fn new(info: PeerInfo, adapter: Arc<NetAdapter>) -> Peer {

p2p/src/serv.rs

@@ -41,9 +41,6 @@ pub struct Server {
 	stop: Arc<AtomicBool>,
 }
 
-unsafe impl Sync for Server {}
-unsafe impl Send for Server {}
-
 // TODO TLS
 impl Server {
 	/// Creates a new idle p2p server with no peers

store/src/leaf_set.rs

@@ -36,9 +36,6 @@ pub struct LeafSet {
 	bitmap_bak: Bitmap,
 }
 
-unsafe impl Send for LeafSet {}
-unsafe impl Sync for LeafSet {}
-
 impl LeafSet {
 	/// Open the remove log file.
 	/// The content of the file will be read in memory for fast checking.

store/src/prune_list.rs

@@ -51,9 +51,6 @@ pub struct PruneList {
 	leaf_shift_cache: Vec<u64>,
 }
 
-unsafe impl Send for PruneList {}
-unsafe impl Sync for PruneList {}
-
 impl PruneList {
 	/// Instantiate a new empty prune list
 	pub fn new() -> PruneList {