Remove old __init__ imports

Signed-off-by: Samuel Monson <[email protected]>

Author: sjmonson

src/guidellm/scheduler/__init__.py

@@ -55,25 +55,20 @@
     "BackendInterface",
     "BackendT",
     "ConcurrentStrategy",
-    "ConstantRateRequestTimings",
     "Constraint",
     "ConstraintInitializer",
     "ConstraintsInitializerFactory",
     "Environment",
-    "LastCompletionRequestTimings",
     "MaxDurationConstraint",
     "MaxErrorRateConstraint",
     "MaxErrorsConstraint",
     "MaxGlobalErrorRateConstraint",
     "MaxNumberConstraint",
     "MultiTurnRequestT",
-    "NoDelayRequestTimings",
     "NonDistributedEnvironment",
-    "PoissonRateRequestTimings",
     "PydanticConstraintInitializer",
     "RequestT",
     "ResponseT",
-    "ScheduledRequestTimings",
     "Scheduler",
     "SchedulerMessagingPydanticRegistry",
     "SchedulerState",