Remove unneeded rewind test in skidmarks

src/graphics/skid_marks.cpp

@@ -29,7 +29,6 @@
 #include "graphics/sp/sp_per_object_uniform.hpp"
 #include "graphics/sp/sp_shader_manager.hpp"
 #include "graphics/sp/sp_uniform_assigner.hpp"
-#include "network/rewind_manager.hpp"
 #include "physics/btKart.hpp"
 #include "utils/mini_glm.hpp"
 
@@ -76,7 +75,7 @@ void SkidMarks::update(float dt, bool force_skid_marks,
                        video::SColor* custom_color)
 {
     //if the kart is gnu, then don't skid because he floats!
-    if (m_kart.isWheeless() || RewindManager::get()->isRewinding())
+    if (m_kart.isWheeless())
         return;
 
     float f = dt / stk_config->m_skid_fadeout_time;