boot-qemu.py: Fix always downloading LoongArch firmware

If the old firmware filename does not exist, the new firmware is always
downloaded, even if it already exists. Remove the handling for the old
to new transition so that the firmware is only downloaded when it is
actually needed.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>

Author: nathanchance

boot-qemu.py

@@ -510,12 +510,8 @@ def __init__(self):
         self._initrd_arch = 'loongarch'
 
         bios = Path(utils.BOOT_UTILS, 'images', self._initrd_arch,
-                    'edk2-loongarch64-code.fd')
+                    'QEMU_EFI.fd')
         if not bios.exists():
-            # Loongson renamed this in https://github.com/loongson/Firmware/commit/638906de6143283d86c70d80f4e9a30b50731c24
-            # so download it to the new location if it does not exist already.
-            bios = bios.with_name('QEMU_EFI.fd')
-
             bios.parent.mkdir(exist_ok=True, parents=True)
             firmware_url = f"https://github.com/loongson/Firmware/raw/main/LoongArchVirtMachine/{bios.name}"
             utils.green(