acpi: Remove _OSI(Linux) for ThinkPads

AFAICT the only reason to set _OSI(Linux) on ThinkPads is to get
sensible mute button behavior.  Now that the thinkpad_acpi driver
can do this on is own, there is no reason to keep the ACPI
quirk.

Cc: Len Brown <len.brown@intel.com>
Cc: Jerone Young <jerone.young@canonical.com>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>

drivers/acpi/blacklist.c

@@ -304,60 +304,6 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 	 * Linux ignores it, except for the machines enumerated below.
 	 */
 
-	/*
-	 * Lenovo has a mix of systems OSI(Linux) situations
-	 * and thus we can not wildcard the vendor.
-	 *
-	 * _OSI(Linux) helps sound
-	 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
-	 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
-	 * T400, T500
-	 * _OSI(Linux) has Linux specific hooks
-	 * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
-	 * _OSI(Linux) is a NOP:
-	 * DMI_MATCH(DMI_PRODUCT_VERSION, "3000 N100"),
-	 * DMI_MATCH(DMI_PRODUCT_VERSION, "LENOVO3000 V100"),
-	 */
-	{
-	.callback = dmi_enable_osi_linux,
-	.ident = "Lenovo ThinkPad R61",
-	.matches = {
-		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"),
-		},
-	},
-	{
-	.callback = dmi_enable_osi_linux,
-	.ident = "Lenovo ThinkPad T61",
-	.matches = {
-		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"),
-		},
-	},
-	{
-	.callback = dmi_enable_osi_linux,
-	.ident = "Lenovo ThinkPad X61",
-	.matches = {
-		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"),
-		},
-	},
-	{
-	.callback = dmi_enable_osi_linux,
-	.ident = "Lenovo ThinkPad T400",
-	.matches = {
-		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"),
-		},
-	},
-	{
-	.callback = dmi_enable_osi_linux,
-	.ident = "Lenovo ThinkPad T500",
-	.matches = {
-		     DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-		     DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"),
-		},
-	},
 	/*
 	 * Without this this EEEpc exports a non working WMI interface, with
 	 * this it exports a working "good old" eeepc_laptop interface, fixing