Fix extract frame on Windows (also used for Titler and scopes)

Fixes #596

src/monitor/glwidget.cpp

@@ -584,8 +584,6 @@ void GLWidget::paintGL()
         if ((m_fbo == nullptr) || m_fbo->size() != m_profileSize) {
             delete m_fbo;
             QOpenGLFramebufferObjectFormat fmt;
-            fmt.setSamples(1);
-            fmt.setInternalTextureFormat(GL_RGB);                             // GL_RGBA32F);  // which one is the fastest ?
             m_fbo = new QOpenGLFramebufferObject(m_profileSize.width(), m_profileSize.height(), fmt); // GL_TEXTURE_2D);
         }
         m_fbo->bind();