gh-36230: build/pkgs/networkx/dependencies: drop decorator
    
NetworkX no longer needs decorator:

  networkx/networkx@89a54703
    
URL: #36230
Reported by: Michael Orlitzky
Reviewer(s): Matthias Köppe

Author: Release Manager

build/pkgs/networkx/dependencies

@@ -1,4 +1,4 @@
- decorator | $(PYTHON_TOOLCHAIN) scipy $(PYTHON)
+ | $(PYTHON_TOOLCHAIN) scipy $(PYTHON)
 
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