Revert "lenovo/t400/4.5-1564-g6fa36c9c2c-dirty/2017-04-16T13_28_27Z"

This reverts commit e5454d36ca2f96e452a228db9a1485bff2e8f32e.

The commit in question deletes a lot of unrelated files, and needs to be
reverted.
diff --git a/emulation/qemu-q35/4.5-978-ga4b11e5/2017-02-14T18_13_03Z/rom_checksum.txt b/emulation/qemu-q35/4.5-978-ga4b11e5/2017-02-14T18_13_03Z/rom_checksum.txt
new file mode 100644
index 0000000..188d502
--- /dev/null
+++ b/emulation/qemu-q35/4.5-978-ga4b11e5/2017-02-14T18_13_03Z/rom_checksum.txt
@@ -0,0 +1 @@
+207bec46ecc67419f1462f3f2cbca6d6 *build/coreboot.rom