Drop stale pinephone patches
Seems a while ago PinePhone patches not yet upstreamed where added. However, some of them were reworked/dropped in its way upstream, and this looks the final version that went in: https://patchwork.freedesktop.org/series/79025/
It got merged upstream through these commits: 5f5df8b4^..c8a75348 a6a22f82^..60f2de5f
However, we still have some stale commits/patches that were not dropped with the upstream merge. Remove them now.