fix incorrect names after copying code

pytorch_lightning/profiler/profilers.py

@@ -228,7 +228,7 @@ def __del__(self):
             self.output_file.close()
 
 
-class AutogradProfiler(profiler.BaseProfiler):
+class AutogradProfiler(BaseProfiler):
     """
     This profiler uses Pytorch's torch.autograd.profiler.profile as a backend. It allows to
     profile backend calls and optimize model forward/backward performance.