Revert "build: Use the install_mode option"
This reverts commit d783112c.
We shouldn't remove the 'meson_post_install.py' script because the bash-completion setup still needs it, given that in the stable branch we didn't rename the completion file.
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This reverts commit d783112c.
We shouldn't remove the 'meson_post_install.py' script because the bash-completion setup still needs it, given that in the stable branch we didn't rename the completion file.