remove copybara initialization artifacts

GitOrigin-RevId: 8b6cc43b85b7154c6d110dee224ffb5175d28f9e
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