Merge pull request #1737 from ntnu-arl/fix/recursive_include

Removed a self include in PreintegrationCombinedParams.h

Author: ProfFan

gtsam/navigation/PreintegrationCombinedParams.h

@@ -25,7 +25,6 @@
 /* GTSAM includes */
 #include <gtsam/base/Matrix.h>
 #include <gtsam/navigation/ManifoldPreintegration.h>
-#include <gtsam/navigation/PreintegrationCombinedParams.h>
 #include <gtsam/navigation/TangentPreintegration.h>
 #include <gtsam/nonlinear/NonlinearFactor.h>