build: revert ASCII logo

This was causing the zipfile to have errors while flashing :(

Revert "build: fix build break with non-ascii characters"

This reverts commit 849cbdd9316b8e17fe953a273f878c93aab50478.

Revert "build: Add ASCII SoMeX logo"

This reverts commit a708d887c0b064aaf1aa06e42663a81d477014a0.