Revert "BaseTools: Fix DSC LibraryClass precedence rule"

This reverts commit 039bdb4d3e96f9c9264abf135b8a0eef2e2b4860 for tag202208.
This brings the behavior changes, and needs more discussion.

Signed-off-by: Liming Gao <gaoliming@byosoft.com.cn>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Bob Feng <bob.c.feng@intel.com>
1 file changed