Remove dependencies, not needed since there's nothing to build
I've got a bug report in Debian that claims that the dependencies in meson.build is unnecessary, and removable, since the build system doesn't actually build anything. To me this seems valid.
The report: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=939750
- all the lib*-dev packages are not required (meson.build is wrong, there's nothing to compile here)
This pull request represents the meson.build part of this report, the rest is Debian specific, and I'll take care of it there.