FloppyBootImage: removed special case for x86_64

* completes hrev46470
* to be noted, adding generic_x86 for x86_64 let Haiku crash on boot.

build/jam/images/FloppyBootImage

@@ -110,17 +110,7 @@ if $(NET_BOOT) = 1 {
 }
 
 # boot module links
-if $(TARGET_ARCH) = x86_64 {
+AddBootModuleSymlinksToFloppyBootArchive [ FFilterByBuildFeatures
-	AddBootModuleSymlinksToFloppyBootArchive
-		ata dpc config_manager pci scsi $(USB_ONLY)usb ata_adapter locked_pool
-		scsi_periph generic_x86 ahci generic_ide_pci legacy_sata
-		$(USB_ONLY)<usb>uhci $(USB_ONLY)<usb>ohci $(USB_ONLY)<usb>ehci
-		scsi_cd scsi_disk $(USB_ONLY)usb_disk
-		intel session
-		$(SYSTEM_ADD_ONS_FILE_SYSTEMS)
-	;
-} else {
-	AddBootModuleSymlinksToFloppyBootArchive
 	$(SYSTEM_ADD_ONS_BUS_MANAGERS)
 	openpic@ppc
 	ata_adapter@ata ide_adapter@ide locked_pool scsi_periph
@@ -132,8 +122,7 @@ if $(TARGET_ARCH) = x86_64 {
 	intel session
 	$(SYSTEM_ADD_ONS_FILE_SYSTEMS)
 	$(BOOT_ADD_ONS_NET)
-	;
+] ;
-}
 
 
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