chore: remove add_atomic_lib_to_dependencies_even_for_sysroot_builds.patch (#15692)

patches/common/chromium/.patches

@@ -27,7 +27,6 @@ webview_cross_drag.patch
 worker_context_will_destroy.patch
 browser_plugin_guest.patch
 disable_user_gesture_requirement_for_beforeunload_dialogs.patch
-add_atomic_lib_to_dependencies_even_for_sysroot_builds.patch
 gin_enable_disable_v8_platform.patch
 blink-worker-enable-csp-in-file-scheme.patch
 disable-redraw-lock.patch

patches/common/chromium/add_atomic_lib_to_dependencies_even_for_sysroot_builds.patch

@@ -1,19 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Aleksei Kuzmin <alkuzmin@microsoft.com>
-Date: Thu, 20 Sep 2018 17:47:36 -0700
-Subject: add_atomic_lib_to_dependencies_even_for_sysroot_builds.patch
-
-
-diff --git a/base/BUILD.gn b/base/BUILD.gn
-index 7fb93868d6e009323eceb2ba0f1ff9c506dc5f3b..53c5744953da460c02b43de1bfd184cd92489167 100644
---- a/base/BUILD.gn
-+++ b/base/BUILD.gn
-@@ -1248,7 +1248,7 @@ jumbo_component("base") {
-   # Needed for <atomic> if using newer C++ library than sysroot, except if
-   # building inside the cros_sdk environment - use host_toolchain as a
-   # more robust check for this.
--  if (!use_sysroot && (is_android || (is_linux && !is_chromecast)) &&
-+  if ((is_android || (is_linux && !is_chromecast)) &&
-       host_toolchain != "//build/toolchain/cros:host") {
-     libs += [ "atomic" ]
-   }