frontend: Remove Exit button (#11887)

frontend/forms/OBSBasicControls.ui

@@ -352,25 +352,6 @@
         </property>
        </widget>
       </item>
-      <item>
-       <widget class="QPushButton" name="exitButton">
-        <property name="sizePolicy">
-         <sizepolicy hsizetype="Ignored" vsizetype="Fixed">
-          <horstretch>0</horstretch>
-          <verstretch>0</verstretch>
-         </sizepolicy>
-        </property>
-        <property name="minimumSize">
-         <size>
-          <width>150</width>
-          <height>0</height>
-         </size>
-        </property>
-        <property name="text">
-         <string>Exit</string>
-        </property>
-       </widget>
-      </item>
       <item>
        <spacer name="expVSpacer">
         <property name="orientation">

frontend/widgets/OBSBasic.cpp

@@ -284,8 +284,6 @@ OBSBasic::OBSBasic(QWidget *parent) : OBSMainWindow(parent), undo_s(ui), ui(new
 
 	connect(controls, &OBSBasicControls::SettingsButtonClicked, this, &OBSBasic::on_action_Settings_triggered);
 
-	connect(controls, &OBSBasicControls::ExitButtonClicked, this, &QMainWindow::close);
-
 	startingDockLayout = saveState();
 
 	statsDock = new OBSDock();

frontend/widgets/OBSBasicControls.cpp

@@ -44,9 +44,6 @@ OBSBasicControls::OBSBasicControls(OBSBasic *main) : QFrame(nullptr), ui(new Ui:
 	connect(
 		ui->settingsButton, &QPushButton::clicked, this, [this]() { emit this->SettingsButtonClicked(); },
 		Qt::DirectConnection);
-	connect(
-		ui->exitButton, &QPushButton::clicked, this, [this]() { emit this->ExitButtonClicked(); },
-		Qt::DirectConnection);
 
 	/* Transfer menu actions signals as OBSBasicControls signals */
 	connect(

frontend/widgets/OBSBasicControls.hpp

@@ -64,7 +64,6 @@ signals:
 	void VirtualCamConfigButtonClicked();
 	void StudioModeButtonClicked();
 	void SettingsButtonClicked();
-	void ExitButtonClicked();
 
 	void StartStreamMenuActionClicked();
 	void StopStreamMenuActionClicked();