Convert model to use moved prefix_search method

data/model/_basequery.py

@@ -1,4 +1,4 @@
-from peewee import Clause, SQL, fn
+from peewee import fn
 from cachetools import lru_cache
 
 from data.model import DataModelException
@@ -6,18 +6,6 @@ from data.database import (Repository, User, Team, TeamMember, RepositoryPermiss
                            Namespace, Visibility, ImageStorage, Image, db_for_update)
 
 
-def prefix_search(field, prefix_query):
-  """ Returns the wildcard match for searching for the given prefix query. """
-  # Escape the known wildcard characters.
-  prefix_query = (prefix_query
-                  .replace('!', '!!')
-                  .replace('%', '!%')
-                  .replace('_', '!_')
-                  .replace('[', '!['))
-
-  return field ** Clause(prefix_query + '%', SQL("ESCAPE '!'"))
-
-
 def get_existing_repository(namespace_name, repository_name, for_update=False):
   query = (Repository
            .select(Repository, Namespace)