Merge pull request #1446 from ESMCI/jgfouca/fix_pylint_err_nml

Fix pylint error

Test suite: code-checker
Test baseline:
Test namelist changes:
Test status: bit for bit

Fixes [CIME Github issue #]

User interface changes?: None

Code review:

scripts/lib/CIME/namelist.py

@@ -1006,7 +1006,6 @@ def set_variable_value(self, group_name, variable_name, value, var_size=1):
         group_name = group_name.lower()
 
         minindex, maxindex, step = get_fortran_variable_indices(variable_name, var_size)
-        original_var = variable_name
         variable_name = get_fortran_name_only(variable_name.lower())
 
         expect(minindex > 0, "Indices < 1 not supported in CIME interface to fortran namelists... lower bound=%s"%minindex)