gh-36859: src/sage/libs/pari/convert_sage_matrix.pyx: Remove `sage_setup: distribution`
    
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It was added by mistake in #36645. Thanks for reporting @tornaria

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URL: #36859
Reported by: Matthias Köppe
Reviewer(s):

Author: Release Manager

src/sage/libs/pari/convert_sage_matrix.pyx

@@ -1,4 +1,3 @@
-# sage_setup: distribution = sagemath-pari
 # sage.doctest: needs sage.modules
 
 from cypari2.gen cimport Gen