Tidy up setting of advance flags

moment_kinetics/src/time_advance.jl

@@ -485,10 +485,10 @@ function setup_advance_flags(moments, composition, t_input, collisions,
     # otherwise, check to see if the flags need to be set to true
     if !t_input.split_operators
         # default for non-split operators is to include both vpa and z advection together
-        advance_vpa_advection = true && vpa.n > 1 && z.n > 1
-        advance_vperp_advection = true && vperp.n > 1 && z.n > 1
-        advance_z_advection = true && z.n > 1
-        advance_r_advection = true && r.n > 1
+        advance_vpa_advection = vpa.n > 1 && z.n > 1
+        advance_vperp_advection = vperp.n > 1 && z.n > 1
+        advance_z_advection = z.n > 1
+        advance_r_advection = r.n > 1
         if collisions.nuii > 0.0 && vperp.n > 1
             explicit_weakform_fp_collisions = true
         else