OPEN-347: Remove ineffective, disabled 'hdiutil internet-enable'.

macOS Catalina no longer even recognizes that subcommand. Remove it.

indra/newview/viewer_manifest.py

@@ -1370,7 +1370,6 @@ class DarwinManifest(ViewerManifest):
         print "Converting temp disk image to final disk image"
         self.run_command(['hdiutil', 'convert', sparsename, '-format', 'UDZO',
                           '-imagekey', 'zlib-level=9', '-o', finalname])
-        self.run_command(['hdiutil', 'internet-enable', '-yes', finalname])
         # get rid of the temp file
         self.package_file = finalname
         self.remove(sparsename)