fix warnings

Author: lovasoa

sqlx-core/src/mssql/types/decimal_tools.rs

@@ -42,7 +42,6 @@ pub(crate) fn decode_numeric_bytes(bytes: &[u8]) -> Result<(i8, u128), BoxDynErr
 #[cfg(test)]
 mod tests {
     use super::*;
-    use std::error::Error;
 
     // ========== test decode_money_bytes  ==========
 

sqlx-macros/src/derives/attributes.rs

@@ -1,11 +1,8 @@
 use proc_macro2::{Ident, Span, TokenStream};
 use quote::{quote, quote_spanned};
 use syn::punctuated::Punctuated;
-use syn::spanned::Spanned;
 use syn::token::Comma;
-use syn::{
-    Attribute, DeriveInput, Expr, Field, Lit, LitStr, Meta, MetaNameValue, Path, Token, Variant,
-};
+use syn::{Attribute, DeriveInput, Expr, Field, Lit, Meta, Variant};
 
 macro_rules! assert_attribute {
     ($e:expr, $err:expr, $input:expr) => {

sqlx-macros/src/lib.rs

@@ -20,7 +20,7 @@ use quote::quote;
 
 use syn::parse::{Parse, ParseStream};
 use syn::punctuated::Punctuated;
-use syn::{parse_macro_input, DeriveInput, ItemFn, LitStr, Meta, Token};
+use syn::{parse_macro_input, ItemFn, Meta, Token};
 
 type Error = Box<dyn std::error::Error>;
 

sqlx-macros/src/test_attr.rs

@@ -1,7 +1,7 @@
 use proc_macro2::{Span, TokenStream};
 use quote::quote;
 use syn::punctuated::Punctuated;
-use syn::{Expr, LitBool, LitStr, Meta, MetaList, MetaNameValue, Path, Token};
+use syn::{LitStr, Token};
 
 struct Args {
     fixtures: Vec<LitStr>,