remove viewport_transform_enabled as it seems to be inactive when valid transforms are used.

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -993,18 +993,11 @@ void RasterizerOpenGL::SyncViewport(OpenGLState& current_state) {
     for (std::size_t i = 0; i < viewport_count; i++) {
         auto& viewport = current_state.viewports[i];
         const auto& src = regs.viewports[i];
-        if (regs.viewport_transform_enabled) {
-            const MathUtil::Rectangle<s32> viewport_rect{regs.viewport_transform[i].GetRect()};
-            viewport.x = viewport_rect.left;
-            viewport.y = viewport_rect.bottom;
-            viewport.width = viewport_rect.GetWidth();
-            viewport.height = viewport_rect.GetHeight();
-        } else {
-            viewport.x = src.x;
-            viewport.y = src.y;
-            viewport.width = src.width;
-            viewport.height = src.height;
-        }
+        const MathUtil::Rectangle<s32> viewport_rect{regs.viewport_transform[i].GetRect()};
+        viewport.x = viewport_rect.left;
+        viewport.y = viewport_rect.bottom;
+        viewport.width = viewport_rect.GetWidth();
+        viewport.height = viewport_rect.GetHeight();
         viewport.depth_range_far = regs.viewports[i].depth_range_far;
         viewport.depth_range_near = regs.viewports[i].depth_range_near;
     }