Remove unused variable

Author: scottgerring

clippy_lints/src/unit_types/let_unit_value.rs

@@ -1,6 +1,6 @@
 use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::source::snippet_with_context;
-use clippy_utils::visitors::{for_each_local_assignment, for_each_value_source, is_local_used};
+use clippy_utils::visitors::{for_each_local_assignment, for_each_value_source};
 use core::ops::ControlFlow;
 use rustc_errors::Applicability;
 use rustc_hir::def::{DefKind, Res};
@@ -82,7 +82,7 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, local: &'tcx LetStmt<'_>) {
 
                     // If this is a binding pattern, we need to add suggestions to remove any usages
                     // of the variable
-                    if let PatKind::Binding(_, binding_hir_id, ident, ..) = local.pat.kind
+                    if let PatKind::Binding(_, binding_hir_id, _, ..) = local.pat.kind
                         && let Some(body_id) = cx.enclosing_body.as_ref()
                     {
                         let body = cx.tcx.hir().body(*body_id);
@@ -92,7 +92,6 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, local: &'tcx LetStmt<'_>) {
                         walk_body(&mut visitor, body);
 
                         // Add suggestions for replacing variable usages
-                        let has_usages = !visitor.spans.is_empty();
                         suggestions.extend(visitor.spans.into_iter().map(|span| (span, "()".to_string())));
                     }