Remove unused t_step parameter from s_acoustic_src_calculations

No longer needed after switching from sim_time = t_step*dt to
sim_time = mytime.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: sbryngelson

src/simulation/m_acoustic_src.fpp

@@ -126,9 +126,8 @@ contains
     !> This subroutine updates the rhs by computing the mass, mom, energy sources
     !! @param q_cons_vf Conservative variables
     !! @param q_prim_vf Primitive variables
-    !! @param t_step Current time step
     !! @param rhs_vf rhs variables
-    impure subroutine s_acoustic_src_calculations(q_cons_vf, q_prim_vf, t_step, rhs_vf)
+    impure subroutine s_acoustic_src_calculations(q_cons_vf, q_prim_vf, rhs_vf)
 
         type(scalar_field), dimension(sys_size), intent(inout) :: q_cons_vf !<
         !! This variable contains the WENO-reconstructed values of the cell-average
@@ -142,7 +141,6 @@ contains
 
         type(scalar_field), dimension(sys_size), intent(inout) :: rhs_vf
 
-        integer, intent(in) :: t_step
         #:if not MFC_CASE_OPTIMIZATION and USING_AMD
             real(wp), dimension(3) :: myalpha, myalpha_rho
         #:else

src/simulation/m_rhs.fpp

@@ -1025,7 +1025,6 @@ contains
             call nvtxStartRange("RHS-ACOUSTIC-SRC")
             call s_acoustic_src_calculations(q_cons_qp%vf(1:sys_size), &
                                              q_prim_qp%vf(1:sys_size), &
-                                             t_step, &
                                              rhs_vf)
             call nvtxEndRange
         end if