libtool: remove redundant mode

[surajdm123]

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#16827

mode is redundant and therefore can be removed from libtool.

https://www.gnu.org/software/libtool/manual/libtool.html#Invoking-libtool

[CLAassistant]

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[Managor]

According to the documentation you linked, these should also work. Can you test them?

[spageektti]

According to the documentation you linked, these should also work. Can you test them?

@surajdm123

[surajdm123]

@spageektti @Managor Thank you for reviewing. Updated the PR as suggested.
Like you suggested c is the argument and --c is the flag.

[Managor]

Thanks.