def METHOD_NAME(apps, schema_editor):
    """
    Removes the rsr_projectlocation.country field from all validation sets.
    """
    ProjectEditorValidationSet = apps.get_model("rsr", "ProjectEditorValidationSet")
    validations_to_be_deleted = []
    for validation_set in ProjectEditorValidationSet.objects.all():
        for validation in validation_set.validations.all():
            if 'rsr_projectlocation.country' in validation.validation:
                validations_to_be_deleted.append(validation)
    for delete_validation in validations_to_be_deleted:
        delete_validation.delete()