removed commented ccode corpse

libs_required/ACG/GL/DrawMeshT.cc

@@ -1665,16 +1665,8 @@ void DrawMeshT<Mesh>::updatePickingVertices_opt(ACG::GLState& _state)
 template <class Mesh>
 bool ACG::DrawMeshT<Mesh>::supportsPickingVertices_opt()
 {
-  // load and compile picking shader
-
-  // load once directly from files:
-//   if (!pickVertexShader_)
-//   {
-//     if (pickVertexMethod_ == 0)
-//       pickVertexShader_ = GLSL::loadProgram("Picking/pick_vertices_vs.glsl", "Picking/pick_vertices_fs.glsl");
-//     else
-//       pickVertexShader_ = GLSL::loadProgram("Picking/vertex.glsl", "Picking/pick_vertices_fs2.glsl");
-//   }
+  // load and compile picking shader if necessary
+  // use shaderGenDesc to generate shaders for better shader compatibility
   static ShaderGenDesc desc;
   // load from cache
   if (pickVertexMethod_ == 0)