fix doubling search results in Search Result Panel

After fix local search in SFC POU in 163d3a8, search results tree assemble with "children" branches: results of search in actions anf transitions. Deleted code doubling this search results into one more separate branch, so it's useless.

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from pyjs.jsonrpc import JSONRPCServiceBase

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class JSONRPCService(JSONRPCServiceBase):

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    def serve(self):

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        return self.process(request.body.read())

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    def __call__(self,func):

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        self.methods[func.__name__]=func

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        return func

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