[temp] Revert "gbox defconfig: renaming and add v2.3. *v2.0_defconfig==board v2.0, *v2.0_defconfig==board v2.1/2.2, *v2.0_defconfig==latest board with RTL8188EU wifi"

This reverts commit 6d09b87cd167903442357426e28352a71c022e7c.

The feature branch will be reset later and this and the reverted commit will be removed.