CTest: Remove vestigial batch test variables
A few SLURM commands are inexplicably in the CTest.cmake module and get added to the CMakeCache when testing is enabled.
Follow-up from !1577 (merged) f984296b .
A few SLURM commands are inexplicably in the CTest.cmake module and get added to the CMakeCache when testing is enabled.
Follow-up from !1577 (merged) f984296b .