Revert "linux-i686.yml/linux-cmake.yml: Prepend 32bit build commands with...
Revert "linux-i686.yml/linux-cmake.yml: Prepend 32bit build commands with linux32, to ensure correct architecture detection when using 'uname -m'"
The Docker image now takes care of it by running the shell with linux32.
This reverts commit 8d4d3388.