Do not free the Ewald table.

examples/main.c

@@ -818,9 +818,6 @@ int main(int argc, char *argv[]) {
   if (with_verbose_timers) timers_close_file();
   engine_clean(&e);
   free(params);
-#ifdef SWIFT_GRAVITY_FORCE_CHECKS
-  if (periodic) gravity_exact_force_ewald_free();
-#endif
 
   /* Say goodbye. */
   if (myrank == 0) message("done. Bye.");

src/gravity.c

@@ -219,19 +219,6 @@ void gravity_exact_force_ewald_init(double boxSize) {
 #endif
 }
 
-/**
- * @brief Free the Ewald summation tables.
- */
-void gravity_exact_force_ewald_free() {
-#ifdef SWIFT_GRAVITY_FORCE_CHECKS
-  free(fewald_x);
-  free(fewald_y);
-  free(fewald_z);
-#else
-  error("Gravity checking function called without the corresponding flag.");
-#endif
-}
-
 #ifdef SWIFT_GRAVITY_FORCE_CHECKS
 /**
  * @brief Compute the Ewald correction for a given distance vector r.