Don't import primitive type modules

Author: faern

clippy_lints/src/float_literal.rs

@@ -6,7 +6,7 @@ use rustc_hir as hir;
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty;
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use std::{f32, f64, fmt};
+use std::fmt;
 
 declare_clippy_lint! {
     /// **What it does:** Checks for float literals with a precision greater

clippy_lints/src/types.rs

@@ -1973,8 +1973,6 @@ impl Ord for FullInt {
 }
 
 fn numeric_cast_precast_bounds<'a>(cx: &LateContext<'_, '_>, expr: &'a Expr<'_>) -> Option<(FullInt, FullInt)> {
-    use std::{i128, i16, i32, i64, i8, isize, u128, u16, u32, u64, u8, usize};
-
     if let ExprKind::Cast(ref cast_exp, _) = expr.kind {
         let pre_cast_ty = cx.tables.expr_ty(cast_exp);
         let cast_ty = cx.tables.expr_ty(expr);