fix: double quotes in the yaml files can lead to not being able to re…

…ad the file on windows, replaced w single quotes

src/py21cmsense/observatory.py

@@ -551,7 +551,7 @@ def grid_baselines(
             weights = self.baseline_weights_from_groups(baseline_groups)
 
         bl_max = np.sqrt(np.max(np.sum(baselines**2, axis=1)))
-        print(len(baselines), len(weights), bl_max)
+
         if weights is None:
             raise ValueError("If baselines are provided, weights must also be provided.")