remove copybara initialization artifacts

GitOrigin-RevId: 2202afc83dea59463550d2cedbb250f6752e9a9b
diff --git a/.copybara b/.copybara
deleted file mode 100644
index 3f1b499..0000000
--- a/.copybara
+++ /dev/null
@@ -1 +0,0 @@
-only for initialization will be removed afterwards.
\ No newline at end of file