remove useless context help button from all QDialogs

src/createnewdialog.cpp

@@ -9,6 +9,7 @@ createNewDialog::createNewDialog(QWidget *parent) :
     ui(new Ui::createNewDialog)
 {
     ui->setupUi(this);
+    setWindowFlags(windowFlags() & (~Qt::WindowContextHelpButtonHint));
     w = new MainWindow(nullptr);
     w->core = new QRCore ();
 }

src/dialogs/aboutdialog.cpp

@@ -7,6 +7,7 @@ AboutDialog::AboutDialog(QWidget *parent) :
     ui(new Ui::AboutDialog)
 {
     ui->setupUi(this);
+    setWindowFlags(windowFlags() & (~Qt::WindowContextHelpButtonHint));
     ui->label->setText("<h1>Iaito</h1>"
                        "Version 1.0 alpha<br />"
                        "Using r2-" R2_VERSION

src/dialogs/commentsdialog.cpp

@@ -6,6 +6,7 @@ CommentsDialog::CommentsDialog(QWidget *parent) :
     ui(new Ui::CommentsDialog)
 {
     ui->setupUi(this);
+    setWindowFlags(windowFlags() & (~Qt::WindowContextHelpButtonHint));
 }
 
 CommentsDialog::~CommentsDialog()

src/dialogs/renamedialog.cpp

@@ -6,6 +6,7 @@ RenameDialog::RenameDialog(QWidget *parent) :
     ui(new Ui::RenameDialog)
 {
     ui->setupUi(this);
+    setWindowFlags(windowFlags() & (~Qt::WindowContextHelpButtonHint));
 }
 
 RenameDialog::~RenameDialog()

src/dialogs/xrefsdialog.cpp

@@ -8,6 +8,7 @@ XrefsDialog::XrefsDialog(MainWindow *main, QWidget *parent) :
     ui(new Ui::XrefsDialog)
 {
     ui->setupUi(this);
+    setWindowFlags(windowFlags() & (~Qt::WindowContextHelpButtonHint));
     this->main = main;
 
     // Increase asm text edit margin

src/newfiledialog.cpp

@@ -45,6 +45,7 @@ NewFileDialog::NewFileDialog(QWidget *parent) :
     ui(new Ui::NewFileDialog)
 {
     ui->setupUi(this);
+    setWindowFlags(windowFlags() & (~Qt::WindowContextHelpButtonHint));
     ui->recentsList->addAction(ui->actionRemove_item);
     ui->recentsList->addAction(ui->actionClear_all);
     ui->recentsList->setIconSize(QSize(48, 48));

src/optionsdialog.cpp

@@ -14,6 +14,7 @@ OptionsDialog::OptionsDialog(QWidget *parent):
     this->anal_level = 0;
 
     ui->setupUi(this);
+    setWindowFlags(windowFlags() & (~Qt::WindowContextHelpButtonHint));
     ui->progressBar->setVisible(0);
     ui->statusLabel->setVisible(0);