Revert of Do a better job at faking simple challenge signatures.

chromeos/BUILD.gn

Index: chromeos/BUILD.gn
diff --git a/chromeos/BUILD.gn b/chromeos/BUILD.gn
index 95dd7f08c0b5ef260da1510712c59a036ca4d73f..082cfb642dd235afce673145720c1da14bb2a046 100644
--- a/chromeos/BUILD.gn
+++ b/chromeos/BUILD.gn
@@ -24,7 +24,6 @@
     "//dbus",
   ]
   deps = [
-    ":attestation_proto",
     ":cryptohome_proto",
     ":power_manager_proto",
     "//base",
@@ -62,7 +61,6 @@
   testonly = true
   configs += [ "//build/config/linux/dbus" ]
   public_deps = [
-    ":attestation_proto",
     ":chromeos",
     ":cryptohome_proto",
     ":power_manager_proto",
@@ -126,7 +124,6 @@
   testonly = true
   configs += [ "//build/config/linux/dbus" ]
   deps = [
-    ":attestation_proto",
     ":chromeos",
     ":cryptohome_proto",
     ":power_manager_proto",
@@ -150,7 +147,6 @@
     "//third_party/nss:system_nss_no_ssl_config",
   ]
   deps = [
-    ":attestation_proto",
     ":cryptohome_proto",
     ":power_manager_proto",
     ":test_support",
@@ -205,14 +201,6 @@
   proto_out_dir = "chromeos/dbus/cryptohome"
 }
 
-proto_library("attestation_proto") {
-  sources = [
-    "dbus/proto/attestation.proto",
-  ]
-
-  proto_out_dir = "chromeos/attestation"
-}
-
 proto_library("cryptohome_signkey_proto") {
   sources = [
     "//third_party/cros_system_api/dbus/cryptohome/signed_secret.proto",