Adjust concurrent tests for start method

examples/stub.py

@@ -4,7 +4,6 @@ import mitmproxy
 """
 
 
-
 def start():
     """
         Called once on script startup before any other events
@@ -12,7 +11,6 @@ def start():
     mitmproxy.ctx.log("start")
 
 
-
 def configure(options):
     """
         Called once on script startup before any other events, and whenever options changes.

test/mitmproxy/script/test_concurrent.py

@@ -42,5 +42,5 @@ class TestConcurrent(mastertest.MasterTest):
             )
         )
         with m.handlecontext():
-            sc.configure(options.Options())
+            sc.start()
         assert "decorator not supported" in m.event_log[0][1]