Squash unnecessary warning from FVdycore

When the user does NOT want to exclude advection tracers, there is currently
no way to safely ensure this without causing a warning to be pushed to stdout
on every time step. This can now be prevented by setting
`EXCLUDE_ADVECTION_TRACERS: NO` in the relevant resource file.

AdvCore_GridCompMod.F90

@@ -599,6 +599,9 @@ subroutine Run(GC, IMPORT, EXPORT, CLOCK, RC)
                adjustTracers = .true.
             end if
          end if
+      else if (adjustTracerMode == 'NO') then
+         ! Proceed without warning
+         adjustTracers = .false.
       else
          call WRITE_PARALLEL('Invalid option, ignored')
          adjustTracers = .false.