Correct a small bug in the swap update in vpi_mod

Author: amaciarey

vpi_mod.f90

@@ -2335,20 +2335,15 @@ subroutine Swap(trap,LogWF,VTable,dt,Lmax,iw,Path,xend,accepted,ipar,&
     ip   = 0
     sum  = 0.d0
 
-    print *, uran,Sw
-    
     do
        ip  = ip+1
        sum = sum+Pp(ip)/Sw 
-       print *, ip,Pp(ip),sum
        if (uran <= sum) then
           ik = ip
           exit
        end if
     end do
 
-    stop
-
     !Check if the chosen partner is different from the Worm itself, 
     !otherwise the update is automatically rejected.