Fixing test 121 to be valid.

Fixes #141

tests/test_121/input/schema_def.tsv

@@ -1,5 +1,5 @@
 id	schema name	aliases	broad_mappings	categories	close_mappings	comments	conforms_to	contributors	created_by	created_on date	default_prefix	default_range	deprecated	deprecated_element_has_exact_replacement	deprecated_element_has_possible_replacement	description	exact_mappings	implements	imports	in_language	instantiates	last_updated_on dat	license	mappings	modified_by	narrow_mappings	notes	rank	related_mappings	see_also	slot_names_unique	source	status	title	todos	version	alt_description_source	alt_description_text	flavor annotation	local name source	local name value	structured_aliases literal_form	structured_aliases alias_predicate	structured_aliases categories	in subset	id_prefixes	emit_prefixes	default_curi_maps
 >id	schema	aliases	broad_mappings	categories	close_mappings	comments	conforms_to	contributors	created_by	ignore	default_prefix	default_range	deprecated	deprecated_element_has_exact_replacement	deprecated_element_has_possible_replacement	description	exact_mappings	implements	ignore	in_language	ignore	ignore	license	mappings	modified_by	narrow_mappings	notes	rank	related_mappings	see_also	slot_names_unique	source	status	title	todos	version	alt_descriptions	alt_descriptions	annotations	local_names	local_names	structured_aliases	structured_aliases	structured_aliases	in_subset	id_prefixes	emit_prefixes	default_curi_maps
 >		internal_separator: '|'	internal_separator: '|'	internal_separator: '|'	internal_separator: '|'	internal_separator: '|'		internal_separator: '|'									internal_separator: '|'	internal_separator: '|'	internal_separator: '|'		internal_separator: '|'			internal_separator: '|'		internal_separator: '|'	internal_separator: '|'		internal_separator: '|'	internal_separator: '|'					internal_separator: '|'									internal_separator: '|'	internal_separator: '|'	internal_separator: '|'	internal_separator: '|'	internal_separator: '|'
->																																					inner_key: source	inner_key: text	inner_key: flavor	inner_key: source	inner_key: value	inner_key: literal_form	inner_key: alias_predicate	inner_key: categories	""
-http://example.com/some_schema	some schema	text1|text2	some_schema:1|some_schema:2	some_schema:1|some_schema:2	some_schema:1|some_schema:2	the overall usefulness of default_curi_maps is debatable|there may be some improper modeling in here like illegal ranges. what software will detect that?|what about numeric, date and booleans that get converted to strings?|what are implements and instantiates good for?|how well does including an imports statement in a schemsheets TSV work?|todo what about multivalued slots with multiple inner keys?|what does the schema repair method do?	LinkML	some_schema:1|some_schema:2	some_schema:1		some_schema	float	we all feel deprecated some times	some_schema:1	some_schema:1	A schema that tests as many elements as possible. For use in testing YAML <-> sheets	some_schema:1|some_schema:2	some_schema:1|some_schema:2	some_schema:1|some_schema:2	English	some_schema:1|some_schema:2		MIT	some_schema:1|some_schema:2	some_schema:1	some_schema:1|some_schema:2	text1|text2	3	some_schema:1|some_schema:2	some_schema:1|some_schema:2	TRUE	some_schema:1	some_schema:1	See description	SETTINGS!	v0.0.1	wiktionary	"An outline or image universally applicable to a general conception, under which it is likely to be presented to the mind"	raspberry	logic	format	schema_definition	EXACT_SYNONYM	some_schema:1|some_schema:2	main_subset|secret_subset	data_prefix_1|data_prefix_2	data_prefix_1|data_prefix_2|non_data_prefix	semweb_context|idot_context
+>																																					inner_key: source	inner_key: description	inner_key: flavor	inner_key: source	inner_key: value	inner_key: literal_form	inner_key: predicate	inner_key: categories	""
+http://example.com/some_schema	some_schema	text1|text2	some_schema:1|some_schema:2	some_schema:1|some_schema:2	some_schema:1|some_schema:2	the overall usefulness of default_curi_maps is debatable|there may be some improper modeling in here like illegal ranges. what software will detect that?|what about numeric, date and booleans that get converted to strings?|what are implements and instantiates good for?|how well does including an imports statement in a schemsheets TSV work?|todo what about multivalued slots with multiple inner keys?|what does the schema repair method do?	LinkML	some_schema:1|some_schema:2	some_schema:1		some_schema	float	we all feel deprecated some times	some_schema:1	some_schema:1	A schema that tests as many elements as possible. For use in testing YAML <-> sheets	some_schema:1|some_schema:2	some_schema:1|some_schema:2	some_schema:1|some_schema:2	English	some_schema:1|some_schema:2		MIT	some_schema:1|some_schema:2	some_schema:1	some_schema:1|some_schema:2	text1|text2	3	some_schema:1|some_schema:2	some_schema:1|some_schema:2	TRUE	some_schema:1	some_schema:1	See description	SETTINGS!	v0.0.1	wiktionary	"An outline or image universally applicable to a general conception, under which it is likely to be presented to the mind"	raspberry	logic	format	schema_definition	EXACT_SYNONYM	some_schema:1|some_schema:2	main_subset|secret_subset	data_prefix_1|data_prefix_2	data_prefix_1|data_prefix_2|non_data_prefix	semweb_context|idot_context

tests/test_121/test_mixs_generation.py

@@ -1,13 +1,5 @@
-import csv
-import logging
 import os
-import pprint
-
-from linkml.generators.projectgen import ProjectGenerator, ProjectConfiguration
 from linkml_runtime.dumpers import yaml_dumper
-from linkml_runtime.utils.schema_as_dict import schema_as_dict
-from linkml_runtime.utils.schemaview import SchemaView
-from linkml.utils.helpers import write_to_file
 
 from schemasheets.schemamaker import SchemaMaker, get_metamodel, SchemaSheetRowException