Remove GLFW from public.bzl.

Added in https://codereview.chromium.org/1842463002

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1835363002

Review URL: https://codereview.chromium.org/1835363002
diff --git a/public.bzl b/public.bzl
index ba10d31..758cb2e 100644
--- a/public.bzl
+++ b/public.bzl
@@ -77,6 +77,7 @@
         "src/fonts/SkFontMgr_fontconfig.cpp",
         "src/gpu/gl/android/*",
         "src/gpu/gl/egl/*",
+        "src/gpu/gl/glfw/*",
         "src/gpu/gl/glx/*",
         "src/gpu/gl/iOS/*",
         "src/gpu/gl/mac/*",