Disable engineering constraints in test

Due to a bug where we were accidentally setting IP4-Y to vary, even
though it is supposed to be computed, we were actually not applying
engineering constraints in this test.

Since we weren't actually applying engineering constraints in the
testing before, just disable them for now. We can look into adding
them later.

Signed-off-by: Patrick Avery <patrick.avery@kitware.com>

tests/calibration/test_calibration.py

@@ -73,7 +73,9 @@ def test_calibration(calibration_dir, test_data_dir):
 
     calibrator = InstrumentCalibrator(
         *calibrators,
-        engineering_constraints='TARDIS',
+        # Engineering constraints were actually not being utilized before,
+        # due to a bug. Disable them for now.
+        # engineering_constraints='TARDIS',
         euler_convention=euler_convention,
     )