Remove singleton pattern

src/aind_behavior_services/base.py

@@ -96,15 +96,3 @@ def get_commit_hash(repository: Optional[PathLike] = None) -> str:
         return repo.head.commit.hexsha
     except git.InvalidGitRepositoryError as e:
         raise e("Not a git repository. Please run from the root of the repository.") from e
-
-
-def singleton(class_):
-    #  from https://stackoverflow.com/questions/6760685/what-is-the-best-way-of-implementing-singleton-in-python
-    instances = {}
-
-    def getinstance(*args, **kwargs):
-        if class_ not in instances:
-            instances[class_] = class_(*args, **kwargs)
-        return instances[class_]
-
-    return getinstance

src/aind_behavior_services/launcher/__init__.py

@@ -23,7 +23,6 @@
 )
 from aind_behavior_services.aind_services import data_mapper
 from aind_behavior_services.aind_services.watchdog import Watchdog
-from aind_behavior_services.base import singleton
 from aind_behavior_services.db_utils import SubjectDataBase, SubjectEntry
 from aind_behavior_services.utils import format_datetime, run_bonsai_process
 
@@ -32,7 +31,6 @@
 TTaskLogic = TypeVar("TTaskLogic", bound=AindBehaviorTaskLogicModel)  # pylint: disable=invalid-name
 
 
-@singleton
 class Launcher(Generic[TRig, TSession, TTaskLogic]):
     RIG_DIR = "Rig"
     SUBJECT_DIR = "Subjects"