build: sync libuv header change

PR-URL: #48429
Backport-PR-URL: #49591
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
PR-URL: #48078

deps/uv/uv.gyp

@@ -161,7 +161,6 @@
             'include/uv/bsd.h',
             'include/uv/aix.h',
             'src/unix/async.c',
-            'src/unix/atomic-ops.h',
             'src/unix/core.c',
             'src/unix/dl.c',
             'src/unix/fs.c',
@@ -175,7 +174,6 @@
             'src/unix/process.c',
             'src/unix/random-devurandom.c',
             'src/unix/signal.c',
-            'src/unix/spinlock.h',
             'src/unix/stream.c',
             'src/unix/tcp.c',
             'src/unix/thread.c',