hotfix: Revert Grub changes (#4099)

* Hotfix grub

* revert changes

archinstall/lib/installer.py

@@ -1397,37 +1397,6 @@ class Installer:
 			except SysCallError as err:
 				raise DiskError(f'Failed to install GRUB boot on {boot_partition.dev_path}: {err}')
 
-		# Add custom UKI entries if enabled
-		if uki_enabled and SysInfo.has_uefi() and efi_partition:
-			custom_entries = self.target / 'etc/grub.d/09_custom'
-			entries_content = (
-				'#!/bin/sh\n'
-				'exec tail -n +3 $0\n'
-				'# This file provides UKI (Unified Kernel Image) boot entries.\n'
-				'# Generated by archinstall. Do not modify the exec tail line above.\n'
-				'# Custom entries can be added below.\n\n'
-			)
-
-			uki_entries = []
-			for kernel in self.kernels:
-				entry = textwrap.dedent(
-					f"""
-					menuentry "Arch Linux ({kernel}) UKI" {{
-						uki /EFI/Linux/arch-{kernel}.efi
-					}}
-					"""
-				)
-				uki_entries.append(entry)
-
-			entries_content += '\n'.join(uki_entries)
-			custom_entries.write_text(entries_content)
-			custom_entries.chmod(0o755)
-
-			# Disable 10_linux to prevent broken entries on kernel updates
-			linux_script = self.target / 'etc/grub.d/10_linux'
-			if linux_script.exists():
-				linux_script.chmod(0o644)
-
 		try:
 			self.arch_chroot(
 				f'grub-mkconfig -o {boot_dir}/grub/grub.cfg',