Revert "Port over g_class_by_name subroutine from OneFS"

This reverts commit 8a9f9f501ef6376ae0722026ed808b69bcdfb82e.
Merge branch 'master' of github.com:/yaneurabeya/freebsd
Don't be picky with case for yes/no prompt

Signed-off-by: Garrett Cooper <yanegomi@gmail.com>