Mako: Remove package

This package (more specifically, the host version) was added for mesa in
the video feed[1]; no packages in the packages feed require this
package.

As mesa will be updated to install Mako using host pip[2], there is no
need to continue maintaining the package here. It will be imported into
the abandoned packages repo[3].

[1]: openwrt@2e17cb9#commitcomment-63047904
[2]: openwrt/video#25
[3]: openwrt/packages-abandoned#26

Signed-off-by: Jeffery To <[email protected]>