Revert of Add policy_templates target for GN. (patchset #3 id:40001 of...

Revert of Add policy_templates target for GN. (patchset #3 id:40001 of https://codereview.chromium.org/957283003/)

Reason for revert:
Seems to have broken (at least) the Mac GN build:
http://build.chromium.org/p/chromium.mac/builders/Mac%20GN
http://build.chromium.org/p/chromium.mac/builders/Mac%20GN%20(dbg)

Original issue's description:
> Add policy_templates target for GN.
>
> BUG=462362
>
> Committed: https://crrev.com/f24e2a468f0fffe65f626ba5d7c4c0089a78a65e
> Cr-Commit-Position: refs/heads/master@{#319616}

TBR=pneubeck@chromium.org,bauerb@chromium.org,knn@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=462362

Review URL: https://codereview.chromium.org/994533003

Cr-Commit-Position: refs/heads/master@{#319620}

components/policy/BUILD.gn

@@ -117,26 +117,6 @@ if (enable_configuration_policy) {
     ]
   }
 
-  grit("policy_templates") {
-    import("resources/policy_templates.gni")
-    source = "resources/policy_templates.grd"
-    use_qualified_include = true
-    output_dir = "$root_gen_dir/chrome"
-    outputs = policy_templates_doc_outputs
-    if (is_android) {
-      outputs += policy_templates_android_outputs
-    }
-    if (is_linux) {
-      outputs += policy_templates_linux_outputs
-    }
-    if (is_mac) {
-      outputs += policy_templates_mac_outputs
-    }
-    if (is_win) {
-      outputs += policy_templates_windows_outputs
-    }
-  }
-
   proto_library("cloud_policy_proto_generated_compile") {
     sources = [
       cloud_policy_proto_path,
@@ -238,4 +218,4 @@ if (enable_configuration_policy) {
     ]
   }
 }
-#TODO(GYP) chrome_manifest_bundle
+#TODO(GYP) policy templates, chrome_manifest_bundle