When running the generatedpython.sh an a system withoutgrealpath (like Linux),which prints to stderr and pollutes the console with an unnecessary error message:

which: no grealpath in (<$PATH>)Python 3.14.0a7+ Type "help", "copyright", "credits" or "license" for more information.>>>

where<$PATH> is the system path which may span multiple lines.

This PR redirects all output to /dev/null, since we're only interested in the return code anyways.