No more u_hdt term in xpart

src/hydro/Default/hydro_part.h

@@ -29,9 +29,6 @@ struct xpart {
   /* Velocity at the last full step. */
   float v_full[3];
 
-  /* Entropy at the half-step. */
-  float u_hdt;
-
   /* Old density. */
   float omega;
 

src/hydro/Gadget2/hydro_part.h

@@ -29,12 +29,6 @@ struct xpart {
   /* Velocity at the last full step. */
   float v_full[3];
 
-  /* Entropy at the half-step. */
-  float u_hdt;
-
-  /* Old density. */
-  float omega;
-
 } __attribute__((aligned(xpart_align)));
 
 /* Data of a single particle. */

src/runner.c

@@ -944,7 +944,7 @@ void runner_dokick(struct runner *r, struct cell *c, int timer) {
       /* Collect total energy. */
       ekin += 0.5 * m * (v_full[0] * v_full[0] + v_full[1] * v_full[1] +
                          v_full[2] * v_full[2]);
-      epot += m * xp->u_hdt;
+      epot += 0.f; //MATTHIEU
 
       /* Minimal time for next end of time-step */
       t_end_min = fminf(p->t_end, t_end_min);