Revert "tests/libc_newlib: blacklist esp32 boards temporarily"
Revert "tests/libc_newlib: blacklist esp32 boards temporarily"

This reverts commit c7dd22efde12c1e1d8a95c2793568fda994c52b3.

miri64/RIOT,ant9000/RIOT,kaspar030/RIOT,OTAkeys/RIOT,OlegHahm/RIOT,basilfx/RIOT,kYc0o/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,basilfx/RIOT,ant9000/RIOT,kYc0o/RIOT,OTAkeys/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,basilfx/RIOT,miri64/RIOT,OTAkeys/RIOT,basilfx/RIOT,RIOT-OS/RIOT,basilfx/RIOT,OlegHahm/RIOT,OlegHahm/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,ant9000/RIOT,kYc0o/RIOT,kaspar030/RIOT,kaspar030/RIOT,authmillenon/RIOT,miri64/RIOT,kYc0o/RIOT,kaspar030/RIOT,OTAkeys/RIOT,jasonatran/RIOT,miri64/RIOT,jasonatran/RIOT,ant9000/RIOT,jasonatran/RIOT,OTAkeys/RIOT,OlegHahm/RIOT,authmillenon/RIOT,authmillenon/RIOT,jasonatran/RIOT,miri64/RIOT,jasonatran/RIOT,OlegHahm/RIOT,kYc0o/RIOT,ant9000/RIOT,RIOT-OS/RIOT,kaspar030/RIOT