Remove unnecessary deletion in hg clone

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Hash: SHA1

Remove unnecessary deletion in hg clone

manifest hash: 4a750332a8b1fe07b63f77ccede89d6486a478e9
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mercurial/commands.py

@@ -315,7 +315,6 b' def clone(ui, source, dest = None, **opt'
         
     finally:
         if not success:
-            del repo
             import shutil
             shutil.rmtree(dest, True)