Simplify a bunch of len(x) > 0/len(x) == 0 style expressions

modules/call_queue.py

@@ -21,7 +21,7 @@ def wrap_gradio_gpu_call(func, extra_outputs=None):
     def f(*args, **kwargs):
 
         # if the first argument is a string that says "task(...)", it is treated as a job id
-        if len(args) > 0 and type(args[0]) == str and args[0][0:5] == "task(" and args[0][-1] == ")":
+        if args and type(args[0]) == str and args[0].startswith("task(") and args[0].endswith(")"):
             id_task = args[0]
             progress.add_task_to_queue(id_task)
         else: