bug#39648: Reverse my commits on GNOME meta-package

[Raghav Gururajan]

> I believe the fourth can be reverted if needed.

Some packages that were removed, I made a mistake of not reading the
comments of why it were added in the first place. Some of them were
non-core and some were core but depracated. It gonna take some time for
me to read and understand their exact role and effect on GNOME
experience. Since I am planning+working on new changes anyway, I will
study and test them throughly all together to see how the experience is
and then commit them. :-)

Regards,
RG.

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