meson: Remove test-efi-create-disk.sh

The script was probably not used for a very long time. It is currently
passed systemd_boot.so as boot loader, which cannot work. The test
entries it creates are all pointing at non-existant efi/linux binaries,
which means they would not even show up in the menu if the created image
were actually booted. There is also nothing that actually tries to run
the image in the first place.

If we end up creating a proper systemd-boot test suite, it would be
better to start from scratch. In the meantime, mkosi already covers
the bare minimum with a simple bootup test.

src/boot/efi/meson.build

@@ -401,7 +401,6 @@ systemd_boot_efi_name = 'systemd-boot@0@.efi'.format(efi_arch[0])
 stub_elf_name = 'linux@0@.elf.stub'.format(efi_arch[0])
 stub_efi_name = 'linux@0@.efi.stub'.format(efi_arch[0])
 
-efi_stubs = []
 foreach tuple : [['systemd_boot.so', systemd_boot_efi_name, systemd_boot_objects, false],
                  [stub_elf_name, stub_efi_name, stub_objects, true]]
         so = custom_target(
@@ -419,7 +418,7 @@ foreach tuple : [['systemd_boot.so', systemd_boot_efi_name, systemd_boot_objects
                 install : tuple[3],
                 install_dir : bootlibdir)
 
-        stub = custom_target(
+        custom_target(
                 tuple[1],
                 input : so,
                 output : tuple[1],
@@ -439,14 +438,4 @@ foreach tuple : [['systemd_boot.so', systemd_boot_efi_name, systemd_boot_objects
                            '@INPUT@', '@OUTPUT@'],
                 install : true,
                 install_dir : bootlibdir)
-
-        efi_stubs += [[so, stub]]
 endforeach
-
-############################################################
-
-test_efi_disk_img = custom_target(
-        'test-efi-disk.img',
-        input : [efi_stubs[0][0], efi_stubs[1][1]],
-        output : 'test-efi-disk.img',
-        command : [test_efi_create_disk_sh, '@OUTPUT@','@INPUT@', splash_bmp])