quipper: remove unused quipper patch.

Use unversioned libchrome is merged to upstream. epatch is also deleted.
Remove unused patch file.

BUG=None
TEST=Noen

Change-Id: Ia94ba48093b5cba20ac79d890e34728af7f34494
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2985023
Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>
Commit-Queue: Qijiang Fan <fqj@google.com>
Tested-by: Qijiang Fan <fqj@google.com>
diff --git a/chromeos-base/quipper/files/quipper-use-unversioned-libchrome.patch b/chromeos-base/quipper/files/quipper-use-unversioned-libchrome.patch
deleted file mode 100644
index 25bb942..0000000
--- a/chromeos-base/quipper/files/quipper-use-unversioned-libchrome.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff --git a/BUILD.gn b/BUILD.gn
-index a8a82258d3d..627c6e191a4 100644
---- a/BUILD.gn
-+++ b/BUILD.gn
-@@ -21,7 +21,7 @@ group("all") {
- 
- pkg_config("target_defaults_pkgs") {
-   pkg_deps = [
--    "libchrome-${libbase_ver}",
-+    "libchrome",
-     "openssl",
-     "protobuf",
-   ]