Everywhere: Remove unnecessary mutable attributes from lambdas

These lambdas were marked mutable as they captured a Ptr wrapper
class by value, which then only returned const-qualified references
to the value they point from the previous const pointer operators.

Nothing is actually mutating in the lambdas state here, and now
that the Ptr operators don't add extra const qualifiers these
can be removed.

1 files changed, 3 insertions, 3 deletions

diff --git a/Userland/Applications/Terminal/main.cpp b/Userland/Applications/Terminal/main.cpp
index 4fbf80a25f..44db0407d5 100644
--- a/Userland/Applications/Terminal/main.cpp
+++ b/Userland/Applications/Terminal/main.cpp
@@ -199,18 +199,18 @@ static ErrorOr<NonnullRefPtr<GUI::Window>> create_find_window(VT::TerminalWidget
     find_forwards->set_fixed_width(25);
     find_forwards->set_icon(TRY(Gfx::Bitmap::try_load_from_file("/res/icons/16x16/downward-triangle.png"sv)));
 
-    find_textbox->on_return_pressed = [find_backwards]() mutable {
+    find_textbox->on_return_pressed = [find_backwards] {
         find_backwards->click();
     };
 
-    find_textbox->on_shift_return_pressed = [find_forwards]() mutable {
+    find_textbox->on_shift_return_pressed = [find_forwards] {
         find_forwards->click();
     };
 
     auto match_case = TRY(main_widget->try_add<GUI::CheckBox>("Case sensitive"));
     auto wrap_around = TRY(main_widget->try_add<GUI::CheckBox>("Wrap around"));
 
-    find_backwards->on_click = [&terminal, find_textbox, match_case, wrap_around](auto) mutable {
+    find_backwards->on_click = [&terminal, find_textbox, match_case, wrap_around](auto) {
         auto needle = find_textbox->text();
         if (needle.is_empty()) {
             return;