Revert "Update w530 to latest 2.73 bios release"

See #113 for some discussion that suggests that there is an issue with
using the latest 2.73 BIOS with an actual CDROM.  Since they report that
the 2.72 BIOS does work, revert to using that as the basis for the build
at the moment.

This reverts commit 228c6ee826.

Descriptions.txt

@@ -82,7 +82,6 @@ g5uj32us.iso  sha1:FIXME w530 BIOS 2.69 (G5ETA8WW) EC 1.13 (G4HT39WW)
 g5uj33us.iso  sha1:FIXME w530 BIOS 2.70 (G5ETB0WW) EC 1.13 (G4HT39WW)
 g5uj34us.iso  sha1:FIXME w530 BIOS 2.71 (G5ETB1WW) EC 1.13 (G4HT39WW)
 g5uj35us.iso  sha1:efc6a8473d1a6379b9ec1573cf54095db10d583c w530 BIOS 2.72 (G5ETB2WW) EC 1.13 (G4HT39WW)
-g5uj36us.iso  sha1:f0bd34614aed820d23d7f2ff86dddf93512f83d7 w530 BIOS 2.73 (G5ETB2WW) EC 1.13 (G4HT39WW)
 g6uj24us.iso  sha1:9dba2945eff1eb387bc24f479e68eb401e3cc4ee x1 Carbon (Type 34xx - Gen1) BIOS 2.76 (G6ETB6WW) EC 1.06 (G6HT24WW)
 g7uj18us.iso  sha1:418bdab59ed0cf8da52078c1f2949f3fec441f0b t430s BIOS 2.64 (G7ETA4WW) EC 1.15 (G7HT39WW)
 g7uj19us.iso  sha1:be900c38e185831ae5fa93266a806bb394ba7ac7 t430s BIOS 2.65 (G7ETA5WW) EC 1.15 (G7HT39WW)
@@ -147,7 +146,7 @@ t470p.R0FHT16W.s0AR0F00.FL2 rule:FL2,dep:r0fuj15wd.iso,depi:r0fuj15wd.iso.bat,pa
 t480.N24HT23W.s0AN2400.FL2  rule:FL2,dep:n24ur04w.iso,depi:n24ur04w.iso.bat,param:0AN2400.FL2  t480 EC 1.08 Flash File
 t480s.N22HT22W.s0AN2200.FL2 rule:FL2,dep:n22ur04w.iso,depi:n22ur04w.iso.bat,param:0AN2200.FL2  t480s EC 1.07 Flash File
 t530.G4HT39WW.s01D5100.FL2  rule:FL2,dep:g4uj38us.iso,depi:g4uj38us.iso.bat,param:01D5100.FL2  t530 EC 1.13 Flash File
-w530.G4HT39WW.s01D5200.FL2  rule:FL2,dep:g5uj36us.iso,depi:g5uj36us.iso.bat,param:01D5200.FL2  w530 EC 1.13 Flash File
+w530.G4HT39WW.s01D5200.FL2  rule:FL2,dep:g5uj35us.iso,depi:g5uj35us.iso.bat,param:01D5200.FL2  w530 EC 1.13 Flash File
 x131e.G8HT52WW.s0AG8000.FL1 rule:FL2,dep:g8uj31us.iso,param:0AG8000.FL1                        x131e BIOS 2.98 Flash File
 #x131e.G8HT52WW.s0ag9000.FL1 rule:FL2,dep:g8uj31us.iso,param:0ag9000.FL1                        x131e g9 BIOS 2.98 Flash File
 x200.7XHT22WW.s01B9000.FL2  rule:FL2multi2,dep:6duj37uc.iso,depi:6duj37uc.iso.bat,param:01B9000.FL2;01B9100.FL2         x200 EC 1.04 Flash File
@@ -197,6 +196,6 @@ patched.t430.iso   rule:niceISO,dep:g1uj45us.iso,suffix:0,insert:0  for patching
 patched.t430s.iso  rule:niceISO,dep:g7uj25us.iso,suffix:0,insert:0  for patching Thinkpad T430s
 patched.t530.iso   rule:niceISO,dep:g4uj38us.iso,suffix:0,insert:0  for patching Thinkpad T530
 patched.t530i.iso  rule:niceISO,dep:g4uj38us.iso,suffix:0,insert:0  for patching Thinkpad T530i
-patched.w530.iso   rule:niceISO,dep:g5uj36us.iso,suffix:0,insert:0  for patching Thinkpad W530
+patched.w530.iso   rule:niceISO,dep:g5uj35us.iso,suffix:0,insert:0  for patching Thinkpad W530
 patched.x230.iso   rule:niceISO,dep:g2uj30us.iso,suffix:0,insert:0  for patching Thinkpad X230
 patched.x230t.iso  rule:niceISO,dep:gcuj24us.iso,suffix:0,insert:0  for patching Thinkpad X230t