Revert "Added BITS_PER_LONG_LONG definition avoiding lib/vsprintf.c errors."

This reverts commit 98b63cc56790a2741662267857cbef64348b5405.
Revert "lib: vsprintf.c: stash vsprintf.c commits from upstream."

This reverts commit 3d618d3328e2d6f27458315a226db2908f6917f4.