Remove un-necessary button

src/turnstileprogress.ui

@@ -90,7 +90,7 @@
       <enum>Qt::Horizontal</enum>
      </property>
      <property name="standardButtons">
-      <set>QDialogButtonBox::Close|QDialogButtonBox::Discard|QDialogButtonBox::Ok</set>
+      <set>QDialogButtonBox::Close|QDialogButtonBox::Discard</set>
      </property>
      <property name="centerButtons">
       <bool>false</bool>

src/ui_turnstileprogress.h

@@ -97,7 +97,7 @@ public:
         buttonBox = new QDialogButtonBox(TurnstileProgress);
         buttonBox->setObjectName(QStringLiteral("buttonBox"));
         buttonBox->setOrientation(Qt::Horizontal);
-        buttonBox->setStandardButtons(QDialogButtonBox::Close|QDialogButtonBox::Discard|QDialogButtonBox::Ok);
+        buttonBox->setStandardButtons(QDialogButtonBox::Close|QDialogButtonBox::Discard);
         buttonBox->setCenterButtons(false);
 
         gridLayout->addWidget(buttonBox, 9, 0, 1, 3);