For 196cdb27 changes

This reverts commit f68784c8.

This code does not seem to be stable when booting with USB flash
connected, causing erratic hangs according to @roddy20.
Delay the merge till 0.6.6 until more information is known.

closes acidanthera/bugtracker#971

closes acidanthera/bugtracker#1388

closes acidanthera/bugtracker#1387

This quirk was required earlier to workaround ASUS bios issues.
A better workaround for these issues was added in 0.6.4.
At this point DeduplicateBootOrder may only mask issues related
to incorrect Bootstrap/BootstrapShort preference for the board
and is thus removed due to being essentially harmful.

Note, that for some firmwares it is normal to have 2 Windows
entries, and DeduplicateBootOrder had nothing to do with it.

Co-authored-by: NMichael Belyaev <usrsse2@me.com>
Co-authored-by: Nvit9696 <vit9696@users.noreply.github.com>

closes acidanthera/bugtracker#1270

closes acidanthera/bugtracker#1331

closes acidanthera/bugtracker#1340

closes acidanthera/bugtracker#1125

closes acidanthera/bugtracker#1276