remove unused arguments

Author: TaKO8Ki

clippy_lints/src/methods/filter_flat_map.rs

@@ -6,12 +6,7 @@ use rustc_span::sym;
 use super::FILTER_MAP;
 
 /// lint use of `filter().flat_map()` for `Iterators`
-pub(super) fn check<'tcx>(
-    cx: &LateContext<'tcx>,
-    expr: &'tcx hir::Expr<'_>,
-    _filter_args: &'tcx [hir::Expr<'_>],
-    _map_args: &'tcx [hir::Expr<'_>],
-) {
+pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>) {
     // lint if caller of `.filter().flat_map()` is an Iterator
     if is_trait_method(cx, expr, sym::Iterator) {
         let msg = "called `filter(..).flat_map(..)` on an `Iterator`";

clippy_lints/src/methods/filter_map_flat_map.rs

@@ -6,12 +6,7 @@ use rustc_span::sym;
 use super::FILTER_MAP;
 
 /// lint use of `filter_map().flat_map()` for `Iterators`
-pub(super) fn check<'tcx>(
-    cx: &LateContext<'tcx>,
-    expr: &'tcx hir::Expr<'_>,
-    _filter_args: &'tcx [hir::Expr<'_>],
-    _map_args: &'tcx [hir::Expr<'_>],
-) {
+pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>) {
     // lint if caller of `.filter_map().flat_map()` is an Iterator
     if is_trait_method(cx, expr, sym::Iterator) {
         let msg = "called `filter_map(..).flat_map(..)` on an `Iterator`";

clippy_lints/src/methods/filter_map_map.rs

@@ -6,12 +6,7 @@ use rustc_span::sym;
 use super::FILTER_MAP;
 
 /// lint use of `filter_map().map()` for `Iterators`
-pub(super) fn check<'tcx>(
-    cx: &LateContext<'tcx>,
-    expr: &'tcx hir::Expr<'_>,
-    _filter_args: &'tcx [hir::Expr<'_>],
-    _map_args: &'tcx [hir::Expr<'_>],
-) {
+pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'_>) {
     // lint if caller of `.filter_map().map()` is an Iterator
     if is_trait_method(cx, expr, sym::Iterator) {
         let msg = "called `filter_map(..).map(..)` on an `Iterator`";

clippy_lints/src/methods/mod.rs

@@ -1713,11 +1713,11 @@ impl<'tcx> LateLintPass<'tcx> for Methods {
             ["next", "skip_while"] => skip_while_next::check(cx, expr, arg_lists[1]),
             ["next", "iter"] => iter_next_slice::check(cx, expr, arg_lists[1]),
             ["map", "filter"] => filter_map::check(cx, expr, false),
-            ["map", "filter_map"] => filter_map_map::check(cx, expr, arg_lists[1], arg_lists[0]),
+            ["map", "filter_map"] => filter_map_map::check(cx, expr),
             ["next", "filter_map"] => filter_map_next::check(cx, expr, arg_lists[1], self.msrv.as_ref()),
             ["map", "find"] => filter_map::check(cx, expr, true),
-            ["flat_map", "filter"] => filter_flat_map::check(cx, expr, arg_lists[1], arg_lists[0]),
-            ["flat_map", "filter_map"] => filter_map_flat_map::check(cx, expr, arg_lists[1], arg_lists[0]),
+            ["flat_map", "filter"] => filter_flat_map::check(cx, expr),
+            ["flat_map", "filter_map"] => filter_map_flat_map::check(cx, expr),
             ["flat_map", ..] => flat_map_identity::check(cx, expr, arg_lists[0], method_spans[0]),
             ["flatten", "map"] => map_flatten::check(cx, expr, arg_lists[1]),
             ["is_some", "find"] => search_is_some::check(cx, expr, "find", arg_lists[1], arg_lists[0], method_spans[1]),