Cleanup rubikpi3 image

[samfreund]

It's kinda big, and we should make it smaller. There's gotta be some software on there we don't need, so let's yeet it.

[samfreund]

   11233  udev
   12950  python3-twisted
   12988  qcom-video-firmware
   13176  grub-common
   15432  systemd
   16712  locales
   17648  linux-image-6.8.0-1054-qcom
   19159  perl-modules-5.38
   20418  iso-codes
   21796  git
   23351  libc6
   29201  python-babel-localedata
   31044  libperl5.38t64
   34110  mesa-libgallium
   36201  libicu74
   36530  vim-runtime
   40441  tensorflow-lite-qcom-apps
   91883  python3-botocore
   97307  qcom-adreno1
  110643  libsnpe1
  115792  snapd
  135750  libllvm20
  170776  linux-modules-6.8.0-1054-qcom
  183550  libqnn1
  189381  openjdk-17-jre-headless
  312030  firmware-qcom-hlosfw
  524516  linux-firmware

These are all the biggest packages. We can dump perl, snapd, vim, and prolly tflite-qcom-apps.

[mcm001]

Not vim :/

[samfreund]

There's been some work done here, but I'm confident there's still stuff left that we can get rid of.