Tighten encapsulation a bit after recent backend generalization

src/postgres/connection/mod.rs

@@ -17,7 +17,7 @@ mod prepare;
 mod select;
 
 pub struct Connection {
-    pub(super) stream: TcpStream,
+    stream: TcpStream,
 
     // Do we think that there is data in the read buffer to be decoded
     stream_readable: bool,

src/postgres/mod.rs

@@ -4,7 +4,7 @@ mod connection;
 
 pub use connection::Connection;
 
-pub(crate) mod protocol;
+mod protocol;
 
 pub mod types;
 

src/row.rs

@@ -1,9 +1,4 @@
-use crate::{
-    backend::Backend,
-    deserialize::FromSql,
-    postgres::{protocol::DataRow, Postgres},
-    types::SqlType,
-};
+use crate::{backend::Backend, deserialize::FromSql, postgres::Postgres, types::SqlType};
 
 pub trait RawRow {
     fn is_empty(&self) -> bool;