Misc minor WinRT fixes and cleanups

Change-Id: Ibf041e74d81ef266791e6b6a3bb43bf504b035b3
Reviewed-on: https://chromium-review.googlesource.com/374040
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
diff --git a/BUILD.gn b/BUILD.gn
index 64bba37..5c0b1fc 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -337,11 +337,7 @@
   if (angle_enable_d3d11) {
     sources += rebase_path(gles_gypi.libangle_d3d11_sources, ".", "src")
     sources += rebase_path(gles_gypi.libangle_d3d11_win32_sources, ".", "src")
-    libs += [
-      "dxguid.lib",
-      "Cfgmgr32.lib",
-      "setupapi.lib",
-    ]
+    libs += [ "dxguid.lib" ]
   }
 
   if (angle_enable_gl) {