Explicitly clean the dist-info file

SCons will clean up the files inside that directory automatically
but will not delete the directory.

Author: timj

python/lsst/sconsUtils/scripts.py

@@ -145,7 +145,7 @@ def initialize(
         state.env.BuildETags()
         if cleanExt is None:
             cleanExt = r"*~ core core.[1-9]* *.so *.os *.o *.pyc *.pkgc"
-        state.env.CleanTree(cleanExt, "__pycache__ .pytest_cache")
+        state.env.CleanTree(cleanExt, "__pycache__ .pytest_cache *.dist-info")
         if versionModuleName is not None:
             try:
                 versionModuleName = versionModuleName % "/".join(packageName.split("_"))