Remove useless field init in template m_camMsg_vehicle

ttcn/CAM/LibItsCam_Templates.ttcn

@@ -556,7 +556,6 @@ module LibItsCam_Templates {
             template (value) ReferencePosition p_referencePosition
         ) modifies m_camMsg_vehicle_HF_BV := {
             cam := {
-                generationDeltaTime := p_generationTime,
                 camParameters := {
                     lowFrequencyContainer := {
                         basicVehicleContainerLowFrequency := {