Mark libcore team as owner of external/slf4j.

Bug: 210532587
Test: n/a
Change-Id: Idd1c6880c117c45bbc59dc2ad8cd270c2756a1ed
diff --git a/OWNERS b/OWNERS
index 3176d4a..2d36574 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,4 +1,2 @@
-# This project was last update 4 years ago by ceki@qos.ch?
-# Please update this list if you find better candidates.
-jeffbailey@google.com
-rtenneti@google.com
+# Bug component: 24949
+include platform/libcore:/OWNERS