Remove upgrade strategy temporarily

test/collabora/upgrade_info.json

@@ -1 +0,0 @@
-{"filename":  "ix_values.yaml", "keys": ["image"], "test_filename": "test_values.yaml"}

test/collabora/upgrade_strategy

@@ -1,25 +0,0 @@
-#!/usr/bin/python3
-import json
-import sys
-
-from catalog_update.upgrade_strategy import semantic_versioning
-
-
-def newer_mapping(image_tags):
-    key = list(image_tags.keys())[0]
-    tags = {t.strip('v').replace('_', '.'): t for t in image_tags[key]}
-    version = semantic_versioning(image_tags[key])
-    if not version:
-        return {}
-
-    return {
-        'tags': {key: tags[version]},
-        'app_version': tags[version],
-    }
-
-
-if __name__ == '__main__':
-    if len(sys.argv) != 2:
-        exit(1)
-
-    print(json.dumps(newer_mapping(json.loads(sys.argv[1]))))