fix: remove some unused variables (#6748)

CHANGELOG.md

@@ -89,6 +89,7 @@
 - Dev: Refactored types used for emoji parsing. (#6714)
 - Dev: `LinkParser` now parses `QStringView`s. (#6715)
 - Dev: Cleaned up `AccountController` connections. (#6735)
+- Dev: Removed unused variables. (#6748)
 
 ## 2.5.4
 

src/widgets/dialogs/EditUserNotesDialog.cpp

@@ -287,9 +287,8 @@ EditUserNotesDialog::EditUserNotesDialog(QWidget *parent)
 
     headerLayout->addSpacing(175);  // group markdown toolbar buttons
 
-    auto previewCheckBox =
-        headerLayout.emplace<QCheckBox>("Show Markdown Preview")
-            .assign(&this->previewCheckBox_);
+    headerLayout.emplace<QCheckBox>("Show Markdown Preview")
+        .assign(&this->previewCheckBox_);
 
     auto splitter =
         layout.emplace<QSplitter>(Qt::Horizontal).assign(&this->splitter_);

src/widgets/helper/NotebookTab.cpp

@@ -130,7 +130,6 @@ NotebookTab::NotebookTab(Notebook *notebook)
 
     this->closeMultipleTabsMenu_ = new QMenu("Close Multiple Tabs", this);
 
-    const auto tabDirection = getSettings()->tabDirection.getEnum();
     this->menu_.addMenu(this->closeMultipleTabsMenu_);
     getSettings()->tabDirection.connect(
         [this](int val) {