removed loop_end

Author: Malmahrouqi3

src/simulation/m_riemann_solvers.fpp

@@ -1161,8 +1161,6 @@ contains
         integer :: i, j, k, l, q !< Generic loop iterators
         integer :: idx1, idxi
 
-        integer :: loop_end
-
         ! Populating the buffers of the left and right Riemann problem
         ! states variables, based on the choice of boundary conditions