Revert "test_mappings: Add OWNERS."

This reverts commit 3f82c7cbaff0c422159f6967e4c6e0b2309886d5.

Reason for revert: we are deleting test_mapping Bazel targets, so the build team / kernel test team no longer owns this directory.

Change-Id: Id4564e27e300a979fb9d86778b94946913459992
diff --git a/OWNERS b/OWNERS
deleted file mode 100644
index 4cd653e..0000000
--- a/OWNERS
+++ /dev/null
@@ -1,5 +0,0 @@
-file:kernel/build:/OWNERS
-
-# Android kernel test team
-bettyzhou@google.com
-edliaw@google.com