Remove unnecessary sync async compat code from flowspy

src/prefect/flows.py

@@ -50,7 +50,6 @@
 from prefect._internal.compatibility.deprecated import (
     deprecated_parameter,
 )
-from prefect._internal.concurrency.api import create_call, from_async
 from prefect.blocks.core import Block
 from prefect.client.orchestration import get_client
 from prefect.client.schemas.actions import DeploymentScheduleCreate
@@ -86,7 +85,6 @@
 from prefect.types.entrypoint import EntrypointType
 from prefect.utilities.annotations import NotSet
 from prefect.utilities.asyncutils import (
-    run_sync_in_worker_thread,
     sync_compatible,
 )
 from prefect.utilities.callables import (
@@ -1041,9 +1039,7 @@ def my_flow(name: str = "world"):
             await storage.pull_code()
 
             full_entrypoint = str(storage.destination / entrypoint)
-            flow: Flow = await from_async.wait_for_call_in_new_thread(
-                create_call(load_flow_from_entrypoint, full_entrypoint)
-            )
+            flow: Flow = load_flow_from_entrypoint(full_entrypoint)
             flow._storage = storage
             flow._entrypoint = entrypoint
 
@@ -1887,10 +1883,8 @@ async def load_flow_from_flow_run(
         run_logger.debug(
             f"Importing flow code from module path {deployment.entrypoint}"
         )
-        flow = await run_sync_in_worker_thread(
-            load_flow_from_entrypoint,
-            deployment.entrypoint,
-            use_placeholder_flow=use_placeholder_flow,
+        flow = load_flow_from_entrypoint(
+            deployment.entrypoint, use_placeholder_flow=use_placeholder_flow
         )
         return flow
 
@@ -1932,10 +1926,8 @@ async def load_flow_from_flow_run(
     import_path = relative_path_to_current_platform(deployment.entrypoint)
     run_logger.debug(f"Importing flow code from '{import_path}'")
 
-    flow = await run_sync_in_worker_thread(
-        load_flow_from_entrypoint,
-        str(import_path),
-        use_placeholder_flow=use_placeholder_flow,
+    flow = load_flow_from_entrypoint(
+        str(import_path), use_placeholder_flow=use_placeholder_flow
     )
 
     return flow